88681644 has 36 divisors (see below), whose sum is σ = 224453320. Its totient is φ = 29522880.

The previous prime is 88681643. The next prime is 88681651. The reversal of 88681644 is 44618688.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 88681644.

It is not an unprimeable number, because it can be changed into a prime (88681643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54312 + ... + 55920.

Almost surely, 2^88681644 is an apocalyptic number.

It is an amenable number.

88681644 is an abundant number, since it is smaller than the sum of its proper divisors (135771676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88681644 is a wasteful number, since it uses less digits than its factorization.

88681644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150 (or 3145 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 88681644 is about 9417.0931820812. The cubic root of 88681644 is about 445.9415220909.

The spelling of 88681644 in words is "eighty-eight million, six hundred eighty-one thousand, six hundred forty-four".