87646438 has 16 divisors (see below), whose sum is σ = 146921040. Its totient is φ = 38867200.

The previous prime is 87646417. The next prime is 87646453. The reversal of 87646438 is 83464678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47683 + ... + 49486.

It is an arithmetic number, because the mean of its divisors is an integer number (9182565).

Almost surely, 2^87646438 is an apocalyptic number.

87646438 is a deficient number, since it is larger than the sum of its proper divisors (59274602).

87646438 is a wasteful number, since it uses less digits than its factorization.

87646438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97223.

The product of its digits is 774144, while the sum is 46.

The square root of 87646438 is about 9361.9676350648. The cubic root of 87646438 is about 444.1995254792.

The spelling of 87646438 in words is "eighty-seven million, six hundred forty-six thousand, four hundred thirty-eight".