677812506 has 16 divisors (see below), whose sum is σ = 1549285824. Its totient is φ = 193660704.

The previous prime is 677812469. The next prime is 677812523. The reversal of 677812506 is 605218776.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 16138393 = 677812506 / (6 + 7 + 7 + 8 + 1 + 2 + 5 + 0 + 6).

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 7 ways as a sum of consecutive naturals, for example, 8069155 + ... + 8069238.

It is an arithmetic number, because the mean of its divisors is an integer number (96830364).

Almost surely, 2^677812506 is an apocalyptic number.

677812506 is an abundant number, since it is smaller than the sum of its proper divisors (871473318).

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

677812506 is a wasteful number, since it uses less digits than its factorization.

677812506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16138405.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 677812506 is about 26034.8325517949. The cubic root of 677812506 is about 878.4219765463.

The spelling of 677812506 in words is "six hundred seventy-seven million, eight hundred twelve thousand, five hundred six".