693808161 has 16 divisors (see below), whose sum is σ = 976584000. Its totient is φ = 436926528.

The previous prime is 693808079. The next prime is 693808163. The reversal of 693808161 is 161808396.

It is not a de Polignac number, because 693808161 - 2²⁵ = 660253729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (693808163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2455 + ... + 37331.

It is an arithmetic number, because the mean of its divisors is an integer number (61036500).

Almost surely, 2^693808161 is an apocalyptic number.

It is an amenable number.

693808161 is a deficient number, since it is larger than the sum of its proper divisors (282775839).

693808161 is a wasteful number, since it uses less digits than its factorization.

693808161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35248.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 693808161 is about 26340.2384385563. The cubic root of 693808161 is about 885.2782641852.

The spelling of 693808161 in words is "six hundred ninety-three million, eight hundred eight thousand, one hundred sixty-one".