76740731 has 2 divisors, whose sum is σ = 76740732. Its totient is φ = 76740730.

The previous prime is 76740683. The next prime is 76740751. The reversal of 76740731 is 13704767.

It is a strong prime.

It is an emirp because it is prime and its reverse (13704767) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76740731 is a prime.

It is a super-2 number, since 2×76740731² = 11778279588828722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 76740691 and 76740700.

It is not a weakly prime, because it can be changed into another prime (76740751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38370365 + 38370366.

It is an arithmetic number, because the mean of its divisors is an integer number (38370366).

Almost surely, 2^76740731 is an apocalyptic number.

76740731 is a deficient number, since it is larger than the sum of its proper divisors (1).

76740731 is an equidigital number, since it uses as much as digits as its factorization.

76740731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 76740731 is about 8760.1787082228. The cubic root of 76740731 is about 424.9540545487.

The spelling of 76740731 in words is "seventy-six million, seven hundred forty thousand, seven hundred thirty-one".