77264479 has 2 divisors, whose sum is σ = 77264480. Its totient is φ = 77264478.

The previous prime is 77264443. The next prime is 77264483. The reversal of 77264479 is 97446277.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77264479 - 2⁷ = 77264351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77264419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38632239 + 38632240.

It is an arithmetic number, because the mean of its divisors is an integer number (38632240).

Almost surely, 2^77264479 is an apocalyptic number.

77264479 is a deficient number, since it is larger than the sum of its proper divisors (1).

77264479 is an equidigital number, since it uses as much as digits as its factorization.

77264479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 46.

The square root of 77264479 is about 8790.0215585629. The cubic root of 77264479 is about 425.9186201605.

The spelling of 77264479 in words is "seventy-seven million, two hundred sixty-four thousand, four hundred seventy-nine".