670400677 has 2 divisors, whose sum is σ = 670400678. Its totient is φ = 670400676.

The previous prime is 670400639. The next prime is 670400713. The reversal of 670400677 is 776004076.

670400677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 635342436 + 35058241 = 25206^2 + 5921^2 .

It is a cyclic number.

It is not a de Polignac number, because 670400677 - 2¹¹ = 670398629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670400977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335200338 + 335200339.

It is an arithmetic number, because the mean of its divisors is an integer number (335200339).

Almost surely, 2^670400677 is an apocalyptic number.

It is an amenable number.

670400677 is a deficient number, since it is larger than the sum of its proper divisors (1).

670400677 is an equidigital number, since it uses as much as digits as its factorization.

670400677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 670400677 is about 25892.0968057823. The cubic root of 670400677 is about 875.2084083708.

The spelling of 670400677 in words is "six hundred seventy million, four hundred thousand, six hundred seventy-seven".