87642356 has 12 divisors (see below), whose sum is σ = 155222592. Its totient is φ = 43293048.

The previous prime is 87642343. The next prime is 87642371. The reversal of 87642356 is 65324678.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 131660 + ... + 132323.

It is an arithmetic number, because the mean of its divisors is an integer number (12935216).

Almost surely, 2^87642356 is an apocalyptic number.

It is an amenable number.

87642356 is a deficient number, since it is larger than the sum of its proper divisors (67580236).

87642356 is a wasteful number, since it uses less digits than its factorization.

87642356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264070 (or 264068 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 87642356 is about 9361.7496228002. The cubic root of 87642356 is about 444.1926293989.

The spelling of 87642356 in words is "eighty-seven million, six hundred forty-two thousand, three hundred fifty-six".