670790391 has 16 divisors (see below), whose sum is σ = 899856384. Its totient is φ = 444468384.

The previous prime is 670790371. The next prime is 670790429. The reversal of 670790391 is 193097076.

It is not a de Polignac number, because 670790391 - 2⁵ = 670790359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670790371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427290 + ... + 428856.

It is an arithmetic number, because the mean of its divisors is an integer number (56241024).

Almost surely, 2^670790391 is an apocalyptic number.

670790391 is a deficient number, since it is larger than the sum of its proper divisors (229065993).

670790391 is a wasteful number, since it uses less digits than its factorization.

670790391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 670790391 is about 25899.6214451100. The cubic root of 670790391 is about 875.3779661247.

The spelling of 670790391 in words is "six hundred seventy million, seven hundred ninety thousand, three hundred ninety-one".