83638668 has 24 divisors (see below), whose sum is σ = 201887280. Its totient is φ = 26918080.

The previous prime is 83638631. The next prime is 83638693. The reversal of 83638668 is 86683638.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119823 + ... + 120518.

It is an arithmetic number, because the mean of its divisors is an integer number (8411970).

Almost surely, 2^83638668 is an apocalyptic number.

It is an amenable number.

83638668 is an abundant number, since it is smaller than the sum of its proper divisors (118248612).

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

83638668 is a wasteful number, since it uses less digits than its factorization.

83638668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240377 (or 240375 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 83638668 is about 9145.4178690752. The cubic root of 83638668 is about 437.3230509451.

The spelling of 83638668 in words is "eighty-three million, six hundred thirty-eight thousand, six hundred sixty-eight".