83664906 has 16 divisors (see below), whose sum is σ = 180201504. Its totient is φ = 25743024.

The previous prime is 83664901. The next prime is 83664907. The reversal of 83664906 is 60946638.

It is not an unprimeable number, because it can be changed into a prime (83664901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536236 + ... + 536391.

It is an arithmetic number, because the mean of its divisors is an integer number (11262594).

Almost surely, 2^83664906 is an apocalyptic number.

83664906 is an abundant number, since it is smaller than the sum of its proper divisors (96536598).

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

83664906 is a wasteful number, since it uses less digits than its factorization.

83664906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072645.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 83664906 is about 9146.8522454449. The cubic root of 83664906 is about 437.3687765360.

The spelling of 83664906 in words is "eighty-three million, six hundred sixty-four thousand, nine hundred six".