83643712 has 14 divisors (see below), whose sum is σ = 165980618. Its totient is φ = 41821824.

The previous prime is 83643701. The next prime is 83643727. The reversal of 83643712 is 21734638.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 83612736 + 30976 = 9144^2 + 176^2 .

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, 653403 + ... + 653530.

Almost surely, 2^83643712 is an apocalyptic number.

It is an amenable number.

83643712 is a deficient number, since it is larger than the sum of its proper divisors (82336906).

83643712 is a wasteful number, since it uses less digits than its factorization.

83643712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306945 (or 1306935 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 83643712 is about 9145.6936314311. The cubic root of 83643712 is about 437.3318419871.

The spelling of 83643712 in words is "eighty-three million, six hundred forty-three thousand, seven hundred twelve".