86989724 has 6 divisors (see below), whose sum is σ = 152232024. Its totient is φ = 43494860.

The previous prime is 86989699. The next prime is 86989729. The reversal of 86989724 is 42798968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86989729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10873712 + ... + 10873719.

It is an arithmetic number, because the mean of its divisors is an integer number (25372004).

Almost surely, 2^86989724 is an apocalyptic number.

It is an amenable number.

86989724 is a deficient number, since it is larger than the sum of its proper divisors (65242300).

86989724 is a wasteful number, since it uses less digits than its factorization.

86989724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21747435 (or 21747433 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 86989724 is about 9326.8281854015. The cubic root of 86989724 is about 443.0873157179.

The spelling of 86989724 in words is "eighty-six million, nine hundred eighty-nine thousand, seven hundred twenty-four".