677978854 has 32 divisors (see below), whose sum is σ = 1189518336. Its totient is φ = 283772160.

The previous prime is 677978839. The next prime is 677978867. The reversal of 677978854 is 458879776.

It is a junction number, because it is equal to n+sod(n) for n = 677978792 and 677978801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442069 + ... + 443599.

It is an arithmetic number, because the mean of its divisors is an integer number (37172448).

Almost surely, 2^677978854 is an apocalyptic number.

677978854 is a deficient number, since it is larger than the sum of its proper divisors (511539482).

677978854 is a wasteful number, since it uses less digits than its factorization.

677978854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260.

The product of its digits is 23708160, while the sum is 61.

The square root of 677978854 is about 26038.0270757982. The cubic root of 677978854 is about 878.4938311204.

The spelling of 677978854 in words is "six hundred seventy-seven million, nine hundred seventy-eight thousand, eight hundred fifty-four".