82668724 has 12 divisors (see below), whose sum is σ = 145044900. Its totient is φ = 41227328.

The previous prime is 82668713. The next prime is 82668743. The reversal of 82668724 is 42786628.

It can be written as a sum of positive squares in 2 ways, for example, as 47858724 + 34810000 = 6918^2 + 5900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25009 + ... + 28120.

It is an arithmetic number, because the mean of its divisors is an integer number (12087075).

Almost surely, 2^82668724 is an apocalyptic number.

It is an amenable number.

82668724 is a deficient number, since it is larger than the sum of its proper divisors (62376176).

82668724 is a wasteful number, since it uses less digits than its factorization.

82668724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53522 (or 53520 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 82668724 is about 9092.2342688692. The cubic root of 82668724 is about 435.6259522343.

The spelling of 82668724 in words is "eighty-two million, six hundred sixty-eight thousand, seven hundred twenty-four".