87646644428670 has 48 divisors (see below), whose sum is σ = 228158166686112. Its totient is φ = 23344039419840.

The previous prime is 87646644428593. The next prime is 87646644428671. The reversal of 87646644428670 is 7682444664678.

87646644428670 is a `hidden beast` number, since 8 + 7 + 6 + 46 + 64 + 442 + 86 + 7 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87646644428671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 591573321 + ... + 591721460.

It is an arithmetic number, because the mean of its divisors is an integer number (4753295139294).

Almost surely, 2^{87646644428670} is an apocalyptic number.

87646644428670 is an abundant number, since it is smaller than the sum of its proper divisors (140511522257442).

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

87646644428670 is a wasteful number, since it uses less digits than its factorization.

87646644428670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183295617 (or 1183295614 counting only the distinct ones).

The product of its (nonzero) digits is 2080899072, while the sum is 72.

The spelling of 87646644428670 in words is "eighty-seven trillion, six hundred forty-six billion, six hundred forty-four million, four hundred twenty-eight thousand, six hundred seventy".