83316978 has 32 divisors (see below), whose sum is σ = 185457600. Its totient is φ = 27726048.

The previous prime is 83316967. The next prime is 83317049. The reversal of 83316978 is 87961338.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 50653 + ... + 52271.

It is an arithmetic number, because the mean of its divisors is an integer number (5795550).

Almost surely, 2^83316978 is an apocalyptic number.

83316978 is an abundant number, since it is smaller than the sum of its proper divisors (102140622).

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

83316978 is a wasteful number, since it uses less digits than its factorization.

83316978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583 (or 2577 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 83316978 is about 9127.8134292940. The cubic root of 83316978 is about 436.7616550991.

The spelling of 83316978 in words is "eighty-three million, three hundred sixteen thousand, nine hundred seventy-eight".