76749817 has 2 divisors, whose sum is σ = 76749818. Its totient is φ = 76749816.

The previous prime is 76749779. The next prime is 76749833. The reversal of 76749817 is 71894767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61842496 + 14907321 = 7864^2 + 3861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76749817 is a prime.

It is not a weakly prime, because it can be changed into another prime (76749847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38374908 + 38374909.

It is an arithmetic number, because the mean of its divisors is an integer number (38374909).

Almost surely, 2^76749817 is an apocalyptic number.

It is an amenable number.

76749817 is a deficient number, since it is larger than the sum of its proper divisors (1).

76749817 is an equidigital number, since it uses as much as digits as its factorization.

76749817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 49.

The square root of 76749817 is about 8760.6972895997. The cubic root of 76749817 is about 424.9708252176.

The spelling of 76749817 in words is "seventy-six million, seven hundred forty-nine thousand, eight hundred seventeen".