87931662 has 32 divisors (see below), whose sum is σ = 216448512. Its totient is φ = 23190624.

The previous prime is 87931651. The next prime is 87931663. The reversal of 87931662 is 26613978.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87931663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79978 + ... + 81069.

It is an arithmetic number, because the mean of its divisors is an integer number (6764016).

Almost surely, 2^87931662 is an apocalyptic number.

87931662 is an abundant number, since it is smaller than the sum of its proper divisors (128516850).

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

87931662 is a wasteful number, since it uses less digits than its factorization.

87931662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161072.

The product of its digits is 108864, while the sum is 42.

The square root of 87931662 is about 9377.1883845852. The cubic root of 87931662 is about 444.6808501518.

The spelling of 87931662 in words is "eighty-seven million, nine hundred thirty-one thousand, six hundred sixty-two".