77304377 has 2 divisors, whose sum is σ = 77304378. Its totient is φ = 77304376.

The previous prime is 77304371. The next prime is 77304391. The reversal of 77304377 is 77340377.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58736896 + 18567481 = 7664^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 77304377 - 2⁴ = 77304361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77304377.

It is not a weakly prime, because it can be changed into another prime (77304371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38652188 + 38652189.

It is an arithmetic number, because the mean of its divisors is an integer number (38652189).

Almost surely, 2^77304377 is an apocalyptic number.

It is an amenable number.

77304377 is a deficient number, since it is larger than the sum of its proper divisors (1).

77304377 is an equidigital number, since it uses as much as digits as its factorization.

77304377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86436, while the sum is 38.

The square root of 77304377 is about 8792.2907708970. The cubic root of 77304377 is about 425.9919198068.

The spelling of 77304377 in words is "seventy-seven million, three hundred four thousand, three hundred seventy-seven".