87660572 has 6 divisors (see below), whose sum is σ = 153406008. Its totient is φ = 43830284.

The previous prime is 87660571. The next prime is 87660577. The reversal of 87660572 is 27506678.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87660571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10957568 + ... + 10957575.

It is an arithmetic number, because the mean of its divisors is an integer number (25567668).

Almost surely, 2^87660572 is an apocalyptic number.

It is an amenable number.

87660572 is a deficient number, since it is larger than the sum of its proper divisors (65745436).

87660572 is a wasteful number, since it uses less digits than its factorization.

87660572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21915147 (or 21915145 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 87660572 is about 9362.7224673169. The cubic root of 87660572 is about 444.2234016297.

The spelling of 87660572 in words is "eighty-seven million, six hundred sixty thousand, five hundred seventy-two".