670791285 has 24 divisors (see below), whose sum is σ = 1187447040. Its totient is φ = 350142432.

The previous prime is 670791269. The next prime is 670791307. The reversal of 670791285 is 582197076.

It is not a de Polignac number, because 670791285 - 2⁴ = 670791269 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 670791285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156465 + ... + 160694.

It is an arithmetic number, because the mean of its divisors is an integer number (49476960).

Almost surely, 2^670791285 is an apocalyptic number.

It is an amenable number.

670791285 is a deficient number, since it is larger than the sum of its proper divisors (516655755).

670791285 is a wasteful number, since it uses less digits than its factorization.

670791285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317217 (or 317214 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 670791285 is about 25899.6387040437. The cubic root of 670791285 is about 875.3783550130.

The spelling of 670791285 in words is "six hundred seventy million, seven hundred ninety-one thousand, two hundred eighty-five".