87642874 has 16 divisors (see below), whose sum is σ = 146468736. Its totient is φ = 38989600.

The previous prime is 87642869. The next prime is 87642883. The reversal of 87642874 is 47824678.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41347 + ... + 43414.

It is an arithmetic number, because the mean of its divisors is an integer number (9154296).

Almost surely, 2^87642874 is an apocalyptic number.

87642874 is a deficient number, since it is larger than the sum of its proper divisors (58825862).

87642874 is a wasteful number, since it uses less digits than its factorization.

87642874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84821.

The product of its digits is 602112, while the sum is 46.

The square root of 87642874 is about 9361.7772885281. Note that the first 3 decimals coincide. The cubic root of 87642874 is about 444.1935045136.

The spelling of 87642874 in words is "eighty-seven million, six hundred forty-two thousand, eight hundred seventy-four".