670424939 has 4 divisors (see below), whose sum is σ = 675248280. Its totient is φ = 665601600.

The previous prime is 670424897. The next prime is 670424969. The reversal of 670424939 is 939424076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670424939 - 2⁸ = 670424683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670424939.

It is not an unprimeable number, because it can be changed into a prime (670424969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411462 + ... + 2411739.

It is an arithmetic number, because the mean of its divisors is an integer number (168812070).

Almost surely, 2^670424939 is an apocalyptic number.

670424939 is a deficient number, since it is larger than the sum of its proper divisors (4823341).

670424939 is a wasteful number, since it uses less digits than its factorization.

670424939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823340.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 670424939 is about 25892.5653228876. The cubic root of 670424939 is about 875.2189662610.

The spelling of 670424939 in words is "six hundred seventy million, four hundred twenty-four thousand, nine hundred thirty-nine".