77604953 has 2 divisors, whose sum is σ = 77604954. Its totient is φ = 77604952.

The previous prime is 77604941. The next prime is 77604977. The reversal of 77604953 is 35940677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51308569 + 26296384 = 7163^2 + 5128^2 .

It is a cyclic number.

It is not a de Polignac number, because 77604953 - 2⁶ = 77604889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77604953.

It is not a weakly prime, because it can be changed into another prime (77604053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38802476 + 38802477.

It is an arithmetic number, because the mean of its divisors is an integer number (38802477).

Almost surely, 2^77604953 is an apocalyptic number.

It is an amenable number.

77604953 is a deficient number, since it is larger than the sum of its proper divisors (1).

77604953 is an equidigital number, since it uses as much as digits as its factorization.

77604953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 77604953 is about 8809.3673439130. The cubic root of 77604953 is about 426.5433217540.

The spelling of 77604953 in words is "seventy-seven million, six hundred four thousand, nine hundred fifty-three".