87618722 has 16 divisors (see below), whose sum is σ = 134894592. Its totient is φ = 42658080.

The previous prime is 87618703. The next prime is 87618733. The reversal of 87618722 is 22781678.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 87618722.

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, 80063 + ... + 81149.

It is an arithmetic number, because the mean of its divisors is an integer number (8430912).

Almost surely, 2^87618722 is an apocalyptic number.

87618722 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

87618722 is a deficient number, since it is larger than the sum of its proper divisors (47275870).

87618722 is a wasteful number, since it uses less digits than its factorization.

87618722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2113.

The product of its digits is 75264, while the sum is 41.

The square root of 87618722 is about 9360.4872736413. The cubic root of 87618722 is about 444.1526982025.

The spelling of 87618722 in words is "eighty-seven million, six hundred eighteen thousand, seven hundred twenty-two".