86724844 has 6 divisors (see below), whose sum is σ = 151768484. Its totient is φ = 43362420.

The previous prime is 86724821. The next prime is 86724853. The reversal of 86724844 is 44842768.

It is a self number, because there is not a number n which added to its sum of digits gives 86724844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10840602 + ... + 10840609.

Almost surely, 2^86724844 is an apocalyptic number.

It is an amenable number.

86724844 is a deficient number, since it is larger than the sum of its proper divisors (65043640).

86724844 is a wasteful number, since it uses less digits than its factorization.

86724844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21681215 (or 21681213 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 86724844 is about 9312.6174623464. The cubic root of 86724844 is about 442.6371311502.

The spelling of 86724844 in words is "eighty-six million, seven hundred twenty-four thousand, eight hundred forty-four".