86664424 has 32 divisors (see below), whose sum is σ = 202593600. Its totient is φ = 33765120.

The previous prime is 86664421. The next prime is 86664427. The reversal of 86664424 is 42446668.

It is an interprime number because it is at equal distance from previous prime (86664421) and next prime (86664427).

It is not an unprimeable number, because it can be changed into a prime (86664421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69729 + ... + 70960.

It is an arithmetic number, because the mean of its divisors is an integer number (6331050).

Almost surely, 2^86664424 is an apocalyptic number.

It is an amenable number.

86664424 is an abundant number, since it is smaller than the sum of its proper divisors (115929176).

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

86664424 is a wasteful number, since it uses less digits than its factorization.

86664424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140713 (or 140709 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 86664424 is about 9309.3729112116. The cubic root of 86664424 is about 442.5343142126.

It can be divided in two parts, 866644 and 24, that added together give a palindrome (866668).

The spelling of 86664424 in words is "eighty-six million, six hundred sixty-four thousand, four hundred twenty-four".