82979570 has 16 divisors (see below), whose sum is σ = 150761088. Its totient is φ = 32881200.

The previous prime is 82979569. The next prime is 82979573. The reversal of 82979570 is 7597928.

It is not an unprimeable number, because it can be changed into a prime (82979573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37706 + ... + 39845.

It is an arithmetic number, because the mean of its divisors is an integer number (9422568).

Almost surely, 2^82979570 is an apocalyptic number.

82979570 is a deficient number, since it is larger than the sum of its proper divisors (67781518).

82979570 is a wasteful number, since it uses less digits than its factorization.

82979570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77665.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 82979570 is about 9109.3122682231. The cubic root of 82979570 is about 436.1712742070.

The spelling of 82979570 in words is "eighty-two million, nine hundred seventy-nine thousand, five hundred seventy".