677888047 has 2 divisors, whose sum is σ = 677888048. Its totient is φ = 677888046.

The previous prime is 677888033. The next prime is 677888051. The reversal of 677888047 is 740888776.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677888047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677888747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338944023 + 338944024.

It is an arithmetic number, because the mean of its divisors is an integer number (338944024).

Almost surely, 2^677888047 is an apocalyptic number.

677888047 is a deficient number, since it is larger than the sum of its proper divisors (1).

677888047 is an equidigital number, since it uses as much as digits as its factorization.

677888047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4214784, while the sum is 55.

The square root of 677888047 is about 26036.2832793008. The cubic root of 677888047 is about 878.4546081905.

The spelling of 677888047 in words is "six hundred seventy-seven million, eight hundred eighty-eight thousand, forty-seven".