80777713 has 2 divisors, whose sum is σ = 80777714. Its totient is φ = 80777712.

The previous prime is 80777707. The next prime is 80777717. The reversal of 80777713 is 31777708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 24482704 = 7503^2 + 4948^2 .

It is a cyclic number.

It is not a de Polignac number, because 80777713 - 2²¹ = 78680561 is a prime.

It is not a weakly prime, because it can be changed into another prime (80777717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40388856 + 40388857.

It is an arithmetic number, because the mean of its divisors is an integer number (40388857).

Almost surely, 2^80777713 is an apocalyptic number.

It is an amenable number.

80777713 is a deficient number, since it is larger than the sum of its proper divisors (1).

80777713 is an equidigital number, since it uses as much as digits as its factorization.

80777713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57624, while the sum is 40.

The square root of 80777713 is about 8987.6422380956. The cubic root of 80777713 is about 432.2787142471.

The spelling of 80777713 in words is "eighty million, seven hundred seventy-seven thousand, seven hundred thirteen".