82820656 has 40 divisors (see below), whose sum is σ = 165489408. Its totient is φ = 40128000.

The previous prime is 82820629. The next prime is 82820657. The reversal of 82820656 is 65602828.

It is a super-2 number, since 2×82820656² = 13718522120540672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (82820657) 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, 124966 + ... + 125626.

Almost surely, 2^82820656 is an apocalyptic number.

It is an amenable number.

82820656 is a deficient number, since it is larger than the sum of its proper divisors (82668752).

82820656 is a wasteful number, since it uses less digits than its factorization.

82820656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 82820656 is about 9100.5854756713. The cubic root of 82820656 is about 435.8926593764.

The spelling of 82820656 in words is "eighty-two million, eight hundred twenty thousand, six hundred fifty-six".