83630972 has 6 divisors (see below), whose sum is σ = 146354208. Its totient is φ = 41815484.

The previous prime is 83630959. The next prime is 83630999. The reversal of 83630972 is 27903638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10453868 + ... + 10453875.

It is an arithmetic number, because the mean of its divisors is an integer number (24392368).

Almost surely, 2^83630972 is an apocalyptic number.

It is an amenable number.

83630972 is a deficient number, since it is larger than the sum of its proper divisors (62723236).

83630972 is a wasteful number, since it uses less digits than its factorization.

83630972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907747 (or 20907745 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 83630972 is about 9144.9971022412. The cubic root of 83630972 is about 437.3096371278.

The spelling of 83630972 in words is "eighty-three million, six hundred thirty thousand, nine hundred seventy-two".