670044377 has 2 divisors, whose sum is σ = 670044378. Its totient is φ = 670044376.

The previous prime is 670044373. The next prime is 670044439. The reversal of 670044377 is 773440076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391287961 + 278756416 = 19781^2 + 16696^2 .

It is a cyclic number.

It is not a de Polignac number, because 670044377 - 2² = 670044373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670044377.

It is not a weakly prime, because it can be changed into another prime (670044373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335022188 + 335022189.

It is an arithmetic number, because the mean of its divisors is an integer number (335022189).

Almost surely, 2^670044377 is an apocalyptic number.

It is an amenable number.

670044377 is a deficient number, since it is larger than the sum of its proper divisors (1).

670044377 is an equidigital number, since it uses as much as digits as its factorization.

670044377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 38.

The square root of 670044377 is about 25885.2154134363. The cubic root of 670044377 is about 875.0533309535.

The spelling of 670044377 in words is "six hundred seventy million, forty-four thousand, three hundred seventy-seven".