885601631 has 4 divisors (see below), whose sum is σ = 885717000. Its totient is φ = 885486264.

The previous prime is 885601603. The next prime is 885601643. The reversal of 885601631 is 136106588.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 885601631 - 2¹⁴ = 885585247 is a prime.

It is a super-2 number, since 2×885601631² = 1568580497659720322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885601231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45281 + ... + 61818.

It is an arithmetic number, because the mean of its divisors is an integer number (221429250).

Almost surely, 2^885601631 is an apocalyptic number.

885601631 is a deficient number, since it is larger than the sum of its proper divisors (115369).

885601631 is a wasteful number, since it uses less digits than its factorization.

885601631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115368.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 885601631 is about 29759.0596457617. The cubic root of 885601631 is about 960.3129878619.

The spelling of 885601631 in words is "eight hundred eighty-five million, six hundred one thousand, six hundred thirty-one".