677356457 has 2 divisors, whose sum is σ = 677356458. Its totient is φ = 677356456.

The previous prime is 677356453. The next prime is 677356469. The reversal of 677356457 is 754653776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 355548736 + 321807721 = 18856^2 + 17939^2 .

It is a cyclic number.

It is not a de Polignac number, because 677356457 - 2² = 677356453 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (677356453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338678228 + 338678229.

It is an arithmetic number, because the mean of its divisors is an integer number (338678229).

Almost surely, 2^677356457 is an apocalyptic number.

It is an amenable number.

677356457 is a deficient number, since it is larger than the sum of its proper divisors (1).

677356457 is an equidigital number, since it uses as much as digits as its factorization.

677356457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 50.

The square root of 677356457 is about 26026.0726387982. The cubic root of 677356457 is about 878.2249243431.

The spelling of 677356457 in words is "six hundred seventy-seven million, three hundred fifty-six thousand, four hundred fifty-seven".