83868690 has 32 divisors (see below), whose sum is σ = 201942720. Its totient is φ = 22291904.

The previous prime is 83868661. The next prime is 83868709. The reversal of 83868690 is 9686838.

It is a super-2 number, since 2×83868690² = 14067914324632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5101 + ... + 13919.

It is an arithmetic number, because the mean of its divisors is an integer number (6310710).

Almost surely, 2^83868690 is an apocalyptic number.

83868690 is an abundant number, since it is smaller than the sum of its proper divisors (118074030).

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

83868690 is a wasteful number, since it uses less digits than its factorization.

83868690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 83868690 is about 9157.9850403896. The cubic root of 83868690 is about 437.7235907452.

The spelling of 83868690 in words is "eighty-three million, eight hundred sixty-eight thousand, six hundred ninety".