677478031 has 2 divisors, whose sum is σ = 677478032. Its totient is φ = 677478030.

The previous prime is 677478001. The next prime is 677478059. The reversal of 677478031 is 130874776.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 677478031 - 2⁹ = 677477519 is a prime.

It is a super-2 number, since 2×677478031² = 917952964975273922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677478001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338739015 + 338739016.

It is an arithmetic number, because the mean of its divisors is an integer number (338739016).

Almost surely, 2^677478031 is an apocalyptic number.

677478031 is a deficient number, since it is larger than the sum of its proper divisors (1).

677478031 is an equidigital number, since it uses as much as digits as its factorization.

677478031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 677478031 is about 26028.4081534004. The cubic root of 677478031 is about 878.2774633614.

The spelling of 677478031 in words is "six hundred seventy-seven million, four hundred seventy-eight thousand, thirty-one".