168069997 has 8 divisors (see below), whose sum is σ = 169396920. Its totient is φ = 166748160.

The previous prime is 168069983. The next prime is 168070069. The reversal of 168069997 is 799960861.

It can be written as a sum of positive squares in 4 ways, for example, as 4076361 + 163993636 = 2019^2 + 12806^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168069997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168069907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88029 + ... + 89917.

It is an arithmetic number, because the mean of its divisors is an integer number (21174615).

Almost surely, 2^168069997 is an apocalyptic number.

It is an amenable number.

168069997 is a deficient number, since it is larger than the sum of its proper divisors (1326923).

168069997 is a wasteful number, since it uses less digits than its factorization.

168069997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 168069997 is about 12964.1813085131. The cubic root of 168069997 is about 551.8614581338.

The spelling of 168069997 in words is "one hundred sixty-eight million, sixty-nine thousand, nine hundred ninety-seven".