77075413 has 2 divisors, whose sum is σ = 77075414. Its totient is φ = 77075412.

The previous prime is 77075407. The next prime is 77075429. The reversal of 77075413 is 31457077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 34786404 = 6503^2 + 5898^2 .

It is a cyclic number.

It is not a de Polignac number, because 77075413 - 2²¹ = 74978261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77073413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38537706 + 38537707.

It is an arithmetic number, because the mean of its divisors is an integer number (38537707).

Almost surely, 2^77075413 is an apocalyptic number.

It is an amenable number.

77075413 is a deficient number, since it is larger than the sum of its proper divisors (1).

77075413 is an equidigital number, since it uses as much as digits as its factorization.

77075413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 77075413 is about 8779.2603902607. The cubic root of 77075413 is about 425.5709291162.

The spelling of 77075413 in words is "seventy-seven million, seventy-five thousand, four hundred thirteen".