813051677 has 2 divisors, whose sum is σ = 813051678. Its totient is φ = 813051676.

The previous prime is 813051593. The next prime is 813051719. The reversal of 813051677 is 776150318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813048196 + 3481 = 28514^2 + 59^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813051677 is a prime.

It is a super-2 number, since 2×813051677² = 1322106058945024658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 813051677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813051077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406525838 + 406525839.

It is an arithmetic number, because the mean of its divisors is an integer number (406525839).

Almost surely, 2^813051677 is an apocalyptic number.

It is an amenable number.

813051677 is a deficient number, since it is larger than the sum of its proper divisors (1).

813051677 is an equidigital number, since it uses as much as digits as its factorization.

813051677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 813051677 is about 28514.0610401254. The cubic root of 813051677 is about 933.3389353264.

The spelling of 813051677 in words is "eight hundred thirteen million, fifty-one thousand, six hundred seventy-seven".