674776777 has 4 divisors (see below), whose sum is σ = 674842896. Its totient is φ = 674710660.

The previous prime is 674776771. The next prime is 674776787. The reversal of 674776777 is 777677476.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 674776777 - 2¹⁵ = 674744009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674776771) 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, 14143 + ... + 39364.

It is an arithmetic number, because the mean of its divisors is an integer number (168710724).

Almost surely, 2^674776777 is an apocalyptic number.

It is an amenable number.

674776777 is a deficient number, since it is larger than the sum of its proper divisors (66119).

674776777 is a wasteful number, since it uses less digits than its factorization.

674776777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66118.

The product of its digits is 16941456, while the sum is 58.

The square root of 674776777 is about 25976.4658296697. The cubic root of 674776777 is about 877.1086133194.

The spelling of 674776777 in words is "six hundred seventy-four million, seven hundred seventy-six thousand, seven hundred seventy-seven".