82579964 has 12 divisors (see below), whose sum is σ = 146344800. Its totient is φ = 40767168.

The previous prime is 82579961. The next prime is 82579969. The reversal of 82579964 is 46997528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82579961) 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, 130349 + ... + 130980.

It is an arithmetic number, because the mean of its divisors is an integer number (12195400).

Almost surely, 2^82579964 is an apocalyptic number.

It is an amenable number.

82579964 is a deficient number, since it is larger than the sum of its proper divisors (63764836).

82579964 is a wasteful number, since it uses less digits than its factorization.

82579964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261412 (or 261410 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 82579964 is about 9087.3518694942. The cubic root of 82579964 is about 435.4699883489.

The spelling of 82579964 in words is "eighty-two million, five hundred seventy-nine thousand, nine hundred sixty-four".