670703977 has 2 divisors, whose sum is σ = 670703978. Its totient is φ = 670703976.

The previous prime is 670703963. The next prime is 670703987. The reversal of 670703977 is 779307076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379626256 + 291077721 = 19484^2 + 17061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670703977 is a prime.

It is not a weakly prime, because it can be changed into another prime (670703947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335351988 + 335351989.

It is an arithmetic number, because the mean of its divisors is an integer number (335351989).

Almost surely, 2^670703977 is an apocalyptic number.

It is an amenable number.

670703977 is a deficient number, since it is larger than the sum of its proper divisors (1).

670703977 is an equidigital number, since it uses as much as digits as its factorization.

670703977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388962, while the sum is 46.

The square root of 670703977 is about 25897.9531430575. The cubic root of 670703977 is about 875.3403745705.

The spelling of 670703977 in words is "six hundred seventy million, seven hundred three thousand, nine hundred seventy-seven".