76644677 has 2 divisors, whose sum is σ = 76644678. Its totient is φ = 76644676.

The previous prime is 76644661. The next prime is 76644683. The reversal of 76644677 is 77644667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40271716 + 36372961 = 6346^2 + 6031^2 .

It is an emirp because it is prime and its reverse (77644667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76644677 - 2⁴ = 76644661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76644637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322338 + 38322339.

It is an arithmetic number, because the mean of its divisors is an integer number (38322339).

Almost surely, 2^76644677 is an apocalyptic number.

It is an amenable number.

76644677 is a deficient number, since it is larger than the sum of its proper divisors (1).

76644677 is an equidigital number, since it uses as much as digits as its factorization.

76644677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 47.

The square root of 76644677 is about 8754.6945692011. The cubic root of 76644677 is about 424.7766799068.

The spelling of 76644677 in words is "seventy-six million, six hundred forty-four thousand, six hundred seventy-seven".