83712868 has 6 divisors (see below), whose sum is σ = 146497526. Its totient is φ = 41856432.

The previous prime is 83712859. The next prime is 83712869. The reversal of 83712868 is 86821738.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 78180964 + 5531904 = 8842^2 + 2352^2 .

It is not an unprimeable number, because it can be changed into a prime (83712869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10464105 + ... + 10464112.

Almost surely, 2^83712868 is an apocalyptic number.

It is an amenable number.

83712868 is a deficient number, since it is larger than the sum of its proper divisors (62784658).

83712868 is a wasteful number, since it uses less digits than its factorization.

83712868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20928221 (or 20928219 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 83712868 is about 9149.4736460629. The cubic root of 83712868 is about 437.4523363585.

The spelling of 83712868 in words is "eighty-three million, seven hundred twelve thousand, eight hundred sixty-eight".