73977331 has 2 divisors, whose sum is σ = 73977332. Its totient is φ = 73977330.

The previous prime is 73977307. The next prime is 73977367. The reversal of 73977331 is 13377937.

It is a weak prime.

It is an emirp because it is prime and its reverse (13377937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73977331 - 2¹¹ = 73975283 is a prime.

It is a super-2 number, since 2×73977331² = 10945291003767122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73972331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36988665 + 36988666.

It is an arithmetic number, because the mean of its divisors is an integer number (36988666).

Almost surely, 2^73977331 is an apocalyptic number.

73977331 is a deficient number, since it is larger than the sum of its proper divisors (1).

73977331 is an equidigital number, since it uses as much as digits as its factorization.

73977331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83349, while the sum is 40.

The square root of 73977331 is about 8601.0075572575. The cubic root of 73977331 is about 419.7907706921.

The spelling of 73977331 in words is "seventy-three million, nine hundred seventy-seven thousand, three hundred thirty-one".