86970728464 has 15 divisors (see below), whose sum is σ = 168508071967. Its totient is φ = 43484774416.

The previous prime is 86970728447. The next prime is 86970728479. The reversal of 86970728464 is 46482707968.

The square root of 86970728464 is 294908.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1142769 + ... + 1216495.

Almost surely, 2^86970728464 is an apocalyptic number.

86970728464 is the 294908-th square number.

It is an amenable number.

86970728464 is a deficient number, since it is larger than the sum of its proper divisors (81537343503).

86970728464 is an frugal number, since it uses more digits than its factorization.

86970728464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147462 (or 73729 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 86970728464 in words is "eighty-six billion, nine hundred seventy million, seven hundred twenty-eight thousand, four hundred sixty-four".