73868731 has 2 divisors, whose sum is σ = 73868732. Its totient is φ = 73868730.

The previous prime is 73868693. The next prime is 73868737. The reversal of 73868731 is 13786837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73868731 - 2⁷ = 73868603 is a prime.

It is a super-2 number, since 2×73868731² = 10913178839100722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73868737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36934365 + 36934366.

It is an arithmetic number, because the mean of its divisors is an integer number (36934366).

Almost surely, 2^73868731 is an apocalyptic number.

73868731 is a deficient number, since it is larger than the sum of its proper divisors (1).

73868731 is an equidigital number, since it uses as much as digits as its factorization.

73868731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 73868731 is about 8594.6920247325. The cubic root of 73868731 is about 419.5852500553.

The spelling of 73868731 in words is "seventy-three million, eight hundred sixty-eight thousand, seven hundred thirty-one".