677276591 has 2 divisors, whose sum is σ = 677276592. Its totient is φ = 677276590.

The previous prime is 677276543. The next prime is 677276629. The reversal of 677276591 is 195672776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677276591 - 2¹⁰ = 677275567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677276291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338638295 + 338638296.

It is an arithmetic number, because the mean of its divisors is an integer number (338638296).

Almost surely, 2^677276591 is an apocalyptic number.

677276591 is a deficient number, since it is larger than the sum of its proper divisors (1).

677276591 is an equidigital number, since it uses as much as digits as its factorization.

677276591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 50.

The square root of 677276591 is about 26024.5382475847. The cubic root of 677276591 is about 878.1904062948.

The spelling of 677276591 in words is "six hundred seventy-seven million, two hundred seventy-six thousand, five hundred ninety-one".