82658564 has 6 divisors (see below), whose sum is σ = 144652494. Its totient is φ = 41329280.

The previous prime is 82658561. The next prime is 82658579. The reversal of 82658564 is 46585628.

It can be written as a sum of positive squares in only one way, i.e., 67897600 + 14760964 = 8240^2 + 3842^2 .

It is not an unprimeable number, because it can be changed into a prime (82658561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10332317 + ... + 10332324.

It is an arithmetic number, because the mean of its divisors is an integer number (24108749).

Almost surely, 2^82658564 is an apocalyptic number.

It is an amenable number.

82658564 is a deficient number, since it is larger than the sum of its proper divisors (61993930).

82658564 is a wasteful number, since it uses less digits than its factorization.

82658564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20664645 (or 20664643 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 82658564 is about 9091.6755331457. The cubic root of 82658564 is about 435.6081053357.

The spelling of 82658564 in words is "eighty-two million, six hundred fifty-eight thousand, five hundred sixty-four".