83986770 has 32 divisors (see below), whose sum is σ = 230364288. Its totient is φ = 19196928.

The previous prime is 83986769. The next prime is 83986801. The reversal of 83986770 is 7768938.

It is a Curzon number.

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, 199759 + ... + 200178.

It is an arithmetic number, because the mean of its divisors is an integer number (7198884).

Almost surely, 2^83986770 is an apocalyptic number.

83986770 is an abundant number, since it is smaller than the sum of its proper divisors (146377518).

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

83986770 is a wasteful number, since it uses less digits than its factorization.

83986770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399954.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 83986770 is about 9164.4296058184. The cubic root of 83986770 is about 437.9289203061.

The spelling of 83986770 in words is "eighty-three million, nine hundred eighty-six thousand, seven hundred seventy".