83864670 has 64 divisors (see below), whose sum is σ = 221114880. Its totient is φ = 20262528.

The previous prime is 83864653. The next prime is 83864707. The reversal of 83864670 is 7646838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9912 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (3454920).

Almost surely, 2^83864670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83864670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110557440).

83864670 is an abundant number, since it is smaller than the sum of its proper divisors (137250210).

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

83864670 is a wasteful number, since it uses less digits than its factorization.

83864670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6449.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 83864670 is about 9157.7655571651. The cubic root of 83864670 is about 437.7165969674.

The spelling of 83864670 in words is "eighty-three million, eight hundred sixty-four thousand, six hundred seventy".