670424 has 16 divisors (see below), whose sum is σ = 1266720. Its totient is φ = 332640.

The previous prime is 670409. The next prime is 670447. The reversal of 670424 is 424076.

670424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 670424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (79170).

2⁶⁷⁰⁴²⁴ is an apocalyptic number.

It is an amenable number.

670424 is a deficient number, since it is larger than the sum of its proper divisors (596296).

670424 is a wasteful number, since it uses less digits than its factorization.

670424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 670424 is about 818.7942354462. The cubic root of 670424 is about 87.5218557649.

The spelling of 670424 in words is "six hundred seventy thousand, four hundred twenty-four".