676779457 has 2 divisors, whose sum is σ = 676779458. Its totient is φ = 676779456.

The previous prime is 676779443. The next prime is 676779473. The reversal of 676779457 is 754977676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 639128961 + 37650496 = 25281^2 + 6136^2 .

It is a cyclic number.

It is not a de Polignac number, because 676779457 - 2¹⁹ = 676255169 is a prime.

It is not a weakly prime, because it can be changed into another prime (676779157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338389728 + 338389729.

It is an arithmetic number, because the mean of its divisors is an integer number (338389729).

Almost surely, 2^676779457 is an apocalyptic number.

It is an amenable number.

676779457 is a deficient number, since it is larger than the sum of its proper divisors (1).

676779457 is an equidigital number, since it uses as much as digits as its factorization.

676779457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15558480, while the sum is 58.

The square root of 676779457 is about 26014.9852392808. The cubic root of 676779457 is about 877.9754841701.

The spelling of 676779457 in words is "six hundred seventy-six million, seven hundred seventy-nine thousand, four hundred fifty-seven".