83656556 has 12 divisors (see below), whose sum is σ = 150355968. Its totient is φ = 40697712.

The previous prime is 83656511. The next prime is 83656591. The reversal of 83656556 is 65565638.

It is a super-2 number, since 2×83656556² = 13996838723562272, which contains 22 as substring.

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, 282476 + ... + 282771.

It is an arithmetic number, because the mean of its divisors is an integer number (12529664).

Almost surely, 2^83656556 is an apocalyptic number.

It is an amenable number.

83656556 is a deficient number, since it is larger than the sum of its proper divisors (66699412).

83656556 is a wasteful number, since it uses less digits than its factorization.

83656556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565288 (or 565286 counting only the distinct ones).

The product of its digits is 648000, while the sum is 44.

The square root of 83656556 is about 9146.3957928793. The cubic root of 83656556 is about 437.3542258283.

The spelling of 83656556 in words is "eighty-three million, six hundred fifty-six thousand, five hundred fifty-six".