77104913 has 2 divisors, whose sum is σ = 77104914. Its totient is φ = 77104912.

The previous prime is 77104903. The next prime is 77104927. The reversal of 77104913 is 31940177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56055169 + 21049744 = 7487^2 + 4588^2 .

It is an emirp because it is prime and its reverse (31940177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77104913 - 2⁶ = 77104849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77104913.

It is not a weakly prime, because it can be changed into another prime (77104903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38552456 + 38552457.

It is an arithmetic number, because the mean of its divisors is an integer number (38552457).

Almost surely, 2^77104913 is an apocalyptic number.

It is an amenable number.

77104913 is a deficient number, since it is larger than the sum of its proper divisors (1).

77104913 is an equidigital number, since it uses as much as digits as its factorization.

77104913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 77104913 is about 8780.9403255005. The cubic root of 77104913 is about 425.6252168177.

The spelling of 77104913 in words is "seventy-seven million, one hundred four thousand, nine hundred thirteen".