677777667 has 8 divisors (see below), whose sum is σ = 1032804096. Its totient is φ = 387301512.

The previous prime is 677777609. The next prime is 677777669. The reversal of 677777667 is 766777776.

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

It is not a de Polignac number, because 677777667 - 2⁸ = 677777411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 677777667.

It is not an unprimeable number, because it can be changed into a prime (677777669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16137543 + ... + 16137584.

It is an arithmetic number, because the mean of its divisors is an integer number (129100512).

Almost surely, 2^677777667 is an apocalyptic number.

677777667 is a deficient number, since it is larger than the sum of its proper divisors (355026429).

677777667 is a wasteful number, since it uses less digits than its factorization.

677777667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32275137.

The product of its digits is 25412184, while the sum is 60.

The square root of 677777667 is about 26034.1634588093. The cubic root of 677777667 is about 878.4069262350.

The spelling of 677777667 in words is "six hundred seventy-seven million, seven hundred seventy-seven thousand, six hundred sixty-seven".