168693345 has 12 divisors (see below), whose sum is σ = 292401876. Its totient is φ = 89969760.

The previous prime is 168693307. The next prime is 168693383. The reversal of 168693345 is 543396861.

It is an interprime number because it is at equal distance from previous prime (168693307) and next prime (168693383).

It can be written as a sum of positive squares in 2 ways, for example, as 107993664 + 60699681 = 10392^2 + 7791^2 .

It is not a de Polignac number, because 168693345 - 2⁶ = 168693281 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3748741 = 168693345 / (1 + 6 + 8 + 6 + 9 + 3 + 3 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 168693345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1874326 + ... + 1874415.

It is an arithmetic number, because the mean of its divisors is an integer number (24366823).

Almost surely, 2^168693345 is an apocalyptic number.

168693345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168693345 is a deficient number, since it is larger than the sum of its proper divisors (123708531).

168693345 is a wasteful number, since it uses less digits than its factorization.

168693345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748752 (or 3748749 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 168693345 is about 12988.2002217397. The cubic root of 168693345 is about 552.5428752651.

The spelling of 168693345 in words is "one hundred sixty-eight million, six hundred ninety-three thousand, three hundred forty-five".