670078807 has 2 divisors, whose sum is σ = 670078808. Its totient is φ = 670078806.

The previous prime is 670078781. The next prime is 670078831. The reversal of 670078807 is 708870076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670078807 - 2⁷ = 670078679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670078897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335039403 + 335039404.

It is an arithmetic number, because the mean of its divisors is an integer number (335039404).

Almost surely, 2^670078807 is an apocalyptic number.

670078807 is a deficient number, since it is larger than the sum of its proper divisors (1).

670078807 is an equidigital number, since it uses as much as digits as its factorization.

670078807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 670078807 is about 25885.8804563414. The cubic root of 670078807 is about 875.0683188017.

The spelling of 670078807 in words is "six hundred seventy million, seventy-eight thousand, eight hundred seven".