83664490 has 32 divisors (see below), whose sum is σ = 185351040. Its totient is φ = 26478144.

The previous prime is 83664479. The next prime is 83664499. The reversal of 83664490 is 9446638.

It is not an unprimeable number, because it can be changed into a prime (83664499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45060 + ... + 46879.

It is an arithmetic number, because the mean of its divisors is an integer number (5792220).

Almost surely, 2^83664490 is an apocalyptic number.

83664490 is an abundant number, since it is smaller than the sum of its proper divisors (101686550).

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

83664490 is a wasteful number, since it uses less digits than its factorization.

83664490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91966.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 83664490 is about 9146.8295053532. The cubic root of 83664490 is about 437.3680516374.

The spelling of 83664490 in words is "eighty-three million, six hundred sixty-four thousand, four hundred ninety".