83431660 has 48 divisors (see below), whose sum is σ = 198626400. Its totient is φ = 29182464.

The previous prime is 83431657. The next prime is 83431661. The reversal of 83431660 is 6613438.

It is not an unprimeable number, because it can be changed into a prime (83431661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505 + ... + 13384.

It is an arithmetic number, because the mean of its divisors is an integer number (4138050).

Almost surely, 2^83431660 is an apocalyptic number.

It is an amenable number.

83431660 is an abundant number, since it is smaller than the sum of its proper divisors (115194740).

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

83431660 is a wasteful number, since it uses less digits than its factorization.

83431660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16930 (or 16928 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 83431660 is about 9134.0932773867. The cubic root of 83431660 is about 436.9619573556.

The spelling of 83431660 in words is "eighty-three million, four hundred thirty-one thousand, six hundred sixty".