86642744 has 16 divisors (see below), whose sum is σ = 172011600. Its totient is φ = 40772992.

The previous prime is 86642741. The next prime is 86642747. The reversal of 86642744 is 44724668.

It is an interprime number because it is at equal distance from previous prime (86642741) and next prime (86642747).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86642741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318404 + ... + 318675.

It is an arithmetic number, because the mean of its divisors is an integer number (10750725).

Almost surely, 2^86642744 is an apocalyptic number.

It is an amenable number.

86642744 is a deficient number, since it is larger than the sum of its proper divisors (85368856).

86642744 is a wasteful number, since it uses less digits than its factorization.

86642744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637102 (or 637098 counting only the distinct ones).

The product of its digits is 258048, while the sum is 41.

The square root of 86642744 is about 9308.2084205286. The cubic root of 86642744 is about 442.4974096266.

The spelling of 86642744 in words is "eighty-six million, six hundred forty-two thousand, seven hundred forty-four".