677779908474 has 32 divisors (see below), whose sum is σ = 1384686285696. Its totient is φ = 221118679040.

The previous prime is 677779908473. The next prime is 677779908529. The reversal of 677779908474 is 474809977776.

It is a junction number, because it is equal to n+sod(n) for n = 677779908396 and 677779908405.

It is not an unprimeable number, because it can be changed into a prime (677779908473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5748327 + ... + 5865050.

It is an arithmetic number, because the mean of its divisors is an integer number (43271446428).

Almost surely, 2^677779908474 is an apocalyptic number.

677779908474 is an abundant number, since it is smaller than the sum of its proper divisors (706906377222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677779908474 is a wasteful number, since it uses less digits than its factorization.

677779908474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11613590.

The product of its (nonzero) digits is 1045529856, while the sum is 75.

The spelling of 677779908474 in words is "six hundred seventy-seven billion, seven hundred seventy-nine million, nine hundred eight thousand, four hundred seventy-four".