77371983 has 32 divisors (see below), whose sum is σ = 124420800. Its totient is φ = 47236608.

The previous prime is 77371979. The next prime is 77371991. The reversal of 77371983 is 38917377.

It is not a de Polignac number, because 77371983 - 2² = 77371979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77371993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47283 + ... + 48891.

It is an arithmetic number, because the mean of its divisors is an integer number (3888150).

Almost surely, 2^77371983 is an apocalyptic number.

77371983 is a deficient number, since it is larger than the sum of its proper divisors (47048817).

77371983 is a wasteful number, since it uses less digits than its factorization.

77371983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 1762 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 77371983 is about 8796.1345487663. The cubic root of 77371983 is about 426.1160663705.

The spelling of 77371983 in words is "seventy-seven million, three hundred seventy-one thousand, nine hundred eighty-three".