677767109 has 4 divisors (see below), whose sum is σ = 687883104. Its totient is φ = 667651116.

The previous prime is 677767099. The next prime is 677767121. The reversal of 677767109 is 901767776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677767109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677767009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057897 + ... + 5058030.

It is an arithmetic number, because the mean of its divisors is an integer number (171970776).

Almost surely, 2^677767109 is an apocalyptic number.

It is an amenable number.

677767109 is a deficient number, since it is larger than the sum of its proper divisors (10115995).

677767109 is a wasteful number, since it uses less digits than its factorization.

677767109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115994.

The product of its (nonzero) digits is 777924, while the sum is 50.

The square root of 677767109 is about 26033.9606859963. The cubic root of 677767109 is about 878.4023651186.

The spelling of 677767109 in words is "six hundred seventy-seven million, seven hundred sixty-seven thousand, one hundred nine".