86938724 has 6 divisors (see below), whose sum is σ = 152142774. Its totient is φ = 43469360.

The previous prime is 86938717. The next prime is 86938741. The reversal of 86938724 is 42783968.

It can be written as a sum of positive squares in only one way, i.e., 77440000 + 9498724 = 8800^2 + 3082^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10867337 + ... + 10867344.

It is an arithmetic number, because the mean of its divisors is an integer number (25357129).

Almost surely, 2^86938724 is an apocalyptic number.

It is an amenable number.

86938724 is a deficient number, since it is larger than the sum of its proper divisors (65204050).

86938724 is a wasteful number, since it uses less digits than its factorization.

86938724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21734685 (or 21734683 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 86938724 is about 9324.0937361226. The cubic root of 86938724 is about 443.0007082827. Note that the first 3 decimals are identical.

It can be divided in two parts, 869 and 38724, that added together give a palindrome (39593).

The spelling of 86938724 in words is "eighty-six million, nine hundred thirty-eight thousand, seven hundred twenty-four".