670777577 has 4 divisors (see below), whose sum is σ = 706081680. Its totient is φ = 635473476.

The previous prime is 670777573. The next prime is 670777621. The reversal of 670777577 is 775777076.

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 not a de Polignac number, because 670777577 - 2² = 670777573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670777573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17652023 + ... + 17652060.

It is an arithmetic number, because the mean of its divisors is an integer number (176520420).

Almost surely, 2^670777577 is an apocalyptic number.

It is an amenable number.

670777577 is a deficient number, since it is larger than the sum of its proper divisors (35304103).

670777577 is a wasteful number, since it uses less digits than its factorization.

670777577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35304102.

The product of its (nonzero) digits is 3529470, while the sum is 53.

The square root of 670777577 is about 25899.3740657955. The cubic root of 670777577 is about 875.3723920215.

The spelling of 670777577 in words is "six hundred seventy million, seven hundred seventy-seven thousand, five hundred seventy-seven".