677506663 has 2 divisors, whose sum is σ = 677506664. Its totient is φ = 677506662.

The previous prime is 677506657. The next prime is 677506679. The reversal of 677506663 is 366605776.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677506663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677566663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338753331 + 338753332.

It is an arithmetic number, because the mean of its divisors is an integer number (338753332).

Almost surely, 2^677506663 is an apocalyptic number.

677506663 is a deficient number, since it is larger than the sum of its proper divisors (1).

677506663 is an equidigital number, since it uses as much as digits as its factorization.

677506663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 46.

The square root of 677506663 is about 26028.9581620164. The cubic root of 677506663 is about 878.2898359575.

The spelling of 677506663 in words is "six hundred seventy-seven million, five hundred six thousand, six hundred sixty-three".