88641631 has 16 divisors (see below), whose sum is σ = 102947040. Its totient is φ = 75617280.

The previous prime is 88641629. The next prime is 88641643. The reversal of 88641631 is 13614688.

It is a cyclic number.

It is not a de Polignac number, because 88641631 - 2¹ = 88641629 is a prime.

It is a super-2 number, since 2×88641631² = 15714677492680322, 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 (88641611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5751 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (6434190).

Almost surely, 2^88641631 is an apocalyptic number.

88641631 is a deficient number, since it is larger than the sum of its proper divisors (14305409).

88641631 is a wasteful number, since it uses less digits than its factorization.

88641631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8826.

The product of its digits is 27648, while the sum is 37.

The square root of 88641631 is about 9414.9684545409. The cubic root of 88641631 is about 445.8744426607.

The spelling of 88641631 in words is "eighty-eight million, six hundred forty-one thousand, six hundred thirty-one".