677645071 has 2 divisors, whose sum is σ = 677645072. Its totient is φ = 677645070.

The previous prime is 677644999. The next prime is 677645077. The reversal of 677645071 is 170546776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677645071 - 2²¹ = 675547919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677645077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338822535 + 338822536.

It is an arithmetic number, because the mean of its divisors is an integer number (338822536).

Almost surely, 2^677645071 is an apocalyptic number.

677645071 is a deficient number, since it is larger than the sum of its proper divisors (1).

677645071 is an equidigital number, since it uses as much as digits as its factorization.

677645071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 677645071 is about 26031.6167573203. The cubic root of 677645071 is about 878.3496405662.

The spelling of 677645071 in words is "six hundred seventy-seven million, six hundred forty-five thousand, seventy-one".