83655972 has 18 divisors (see below), whose sum is σ = 211463798. Its totient is φ = 27885312.

The previous prime is 83655967. The next prime is 83655973. The reversal of 83655972 is 27955638.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68956416 + 14699556 = 8304^2 + 3834^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (83655973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1161853 + ... + 1161924.

Almost surely, 2^83655972 is an apocalyptic number.

It is an amenable number.

83655972 is an abundant number, since it is smaller than the sum of its proper divisors (127807826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83655972 is a wasteful number, since it uses less digits than its factorization.

83655972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323787 (or 2323782 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 83655972 is about 9146.3638676799. The cubic root of 83655972 is about 437.3532081138.

The spelling of 83655972 in words is "eighty-three million, six hundred fifty-five thousand, nine hundred seventy-two".