88640064 has 42 divisors (see below), whose sum is σ = 254072390. Its totient is φ = 29546496.

The previous prime is 88640051. The next prime is 88640087. The reversal of 88640064 is 46004688.

88640064 is a `hidden beast` number, since 8 + 8 + 640 + 0 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 129600 = 9408^2 + 360^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76369 + ... + 77520.

Almost surely, 2^88640064 is an apocalyptic number.

It is an amenable number.

88640064 is an abundant number, since it is smaller than the sum of its proper divisors (165432326).

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

88640064 is a wasteful number, since it uses less digits than its factorization.

88640064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153907 (or 153894 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 88640064 is about 9414.8852356256. The cubic root of 88640064 is about 445.8718152671.

The spelling of 88640064 in words is "eighty-eight million, six hundred forty thousand, sixty-four".