16863345 has 12 divisors (see below), whose sum is σ = 29229876. Its totient is φ = 8993760.

The previous prime is 16863313. The next prime is 16863383. The reversal of 16863345 is 54336861.

16863345 is a `hidden beast` number, since 16 + 8 + 633 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3968064 + 12895281 = 1992^2 + 3591^2 .

It is not a de Polignac number, because 16863345 - 2⁵ = 16863313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187326 + ... + 187415.

It is an arithmetic number, because the mean of its divisors is an integer number (2435823).

Almost surely, 2^16863345 is an apocalyptic number.

16863345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16863345 is a deficient number, since it is larger than the sum of its proper divisors (12366531).

16863345 is a wasteful number, since it uses less digits than its factorization.

16863345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374752 (or 374749 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 16863345 is about 4106.5003348350. The cubic root of 16863345 is about 256.4373272320.

The spelling of 16863345 in words is "sixteen million, eight hundred sixty-three thousand, three hundred forty-five".