677772013 has 2 divisors, whose sum is σ = 677772014. Its totient is φ = 677772012.

The previous prime is 677771953. The next prime is 677772019. The reversal of 677772013 is 310277776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517926564 + 159845449 = 22758^2 + 12643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677772013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677772019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338886006 + 338886007.

It is an arithmetic number, because the mean of its divisors is an integer number (338886007).

Almost surely, 2^677772013 is an apocalyptic number.

It is an amenable number.

677772013 is a deficient number, since it is larger than the sum of its proper divisors (1).

677772013 is an equidigital number, since it uses as much as digits as its factorization.

677772013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86436, while the sum is 40.

The square root of 677772013 is about 26034.0548704961. The cubic root of 677772013 is about 878.4044836806.

The spelling of 677772013 in words is "six hundred seventy-seven million, seven hundred seventy-two thousand, thirteen".