677319641 has 2 divisors, whose sum is σ = 677319642. Its totient is φ = 677319640.

The previous prime is 677319611. The next prime is 677319653. The reversal of 677319641 is 146913776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640292416 + 37027225 = 25304^2 + 6085^2 .

It is a cyclic number.

It is not a de Polignac number, because 677319641 - 2¹⁴ = 677303257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 677319592 and 677319601.

It is not a weakly prime, because it can be changed into another prime (677319611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338659820 + 338659821.

It is an arithmetic number, because the mean of its divisors is an integer number (338659821).

Almost surely, 2^677319641 is an apocalyptic number.

It is an amenable number.

677319641 is a deficient number, since it is larger than the sum of its proper divisors (1).

677319641 is an equidigital number, since it uses as much as digits as its factorization.

677319641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 677319641 is about 26025.3653384539. The cubic root of 677319641 is about 878.2090128221.

The spelling of 677319641 in words is "six hundred seventy-seven million, three hundred nineteen thousand, six hundred forty-one".