677998078 has 8 divisors (see below), whose sum is σ = 1018321920. Its totient is φ = 338557440.

The previous prime is 677998051. The next prime is 677998151. The reversal of 677998078 is 870899776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218878 + ... + 221953.

It is an arithmetic number, because the mean of its divisors is an integer number (127290240).

Almost surely, 2^677998078 is an apocalyptic number.

677998078 is a deficient number, since it is larger than the sum of its proper divisors (340323842).

677998078 is a wasteful number, since it uses less digits than its factorization.

677998078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441602.

The product of its (nonzero) digits is 10668672, while the sum is 61.

The square root of 677998078 is about 26038.3962255743. The cubic root of 677998078 is about 878.5021342337.

The spelling of 677998078 in words is "six hundred seventy-seven million, nine hundred ninety-eight thousand, seventy-eight".