83875780 has 12 divisors (see below), whose sum is σ = 176139180. Its totient is φ = 33550304.

The previous prime is 83875751. The next prime is 83875783. The reversal of 83875780 is 8757838.

It can be written as a sum of positive squares in 2 ways, for example, as 61748164 + 22127616 = 7858^2 + 4704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83875780.

It is not an unprimeable number, because it can be changed into a prime (83875783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096875 + ... + 2096914.

It is an arithmetic number, because the mean of its divisors is an integer number (14678265).

Almost surely, 2^83875780 is an apocalyptic number.

It is an amenable number.

83875780 is an abundant number, since it is smaller than the sum of its proper divisors (92263400).

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

83875780 is a wasteful number, since it uses less digits than its factorization.

83875780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193798 (or 4193796 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 83875780 is about 9158.3721260932. The cubic root of 83875780 is about 437.7359249978.

The spelling of 83875780 in words is "eighty-three million, eight hundred seventy-five thousand, seven hundred eighty".