670960778 has 24 divisors (see below), whose sum is σ = 1029071844. Its totient is φ = 328065920.

The previous prime is 670960769. The next prime is 670960783. The reversal of 670960778 is 877069076.

It can be written as a sum of positive squares in 2 ways, for example, as 666001249 + 4959529 = 25807^2 + 2227^2 .

It is a super-2 number, since 2×670960778² = 900376731228730568, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3878300 + ... + 3878472.

Almost surely, 2^670960778 is an apocalyptic number.

670960778 is a deficient number, since it is larger than the sum of its proper divisors (358111066).

670960778 is a wasteful number, since it uses less digits than its factorization.

670960778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The square root of 670960778 is about 25902.9106086555. The cubic root of 670960778 is about 875.4520778992.

The spelling of 670960778 in words is "six hundred seventy million, nine hundred sixty thousand, seven hundred seventy-eight".