670432 has 48 divisors (see below), whose sum is σ = 1566432. Its totient is φ = 276480.

The previous prime is 670409. The next prime is 670447. The reversal of 670432 is 234076.

It is a congruent number.

It is an unprimeable number.

670432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9148 + ... + 9220.

It is an arithmetic number, because the mean of its divisors is an integer number (32634).

2⁶⁷⁰⁴³² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783216).

670432 is an abundant number, since it is smaller than the sum of its proper divisors (896000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670432 is a wasteful number, since it uses less digits than its factorization.

670432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 670432 is about 818.7991206639. The cubic root of 670432 is about 87.5222038889.

The spelling of 670432 in words is "six hundred seventy thousand, four hundred thirty-two".