670144 has 28 divisors (see below), whose sum is σ = 1370584. Its totient is φ = 324864.

The previous prime is 670139. The next prime is 670147. The reversal of 670144 is 441076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670147) 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, 2227 + ... + 2509.

2⁶⁷⁰¹⁴⁴ is an apocalyptic number.

670144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685292).

670144 is an abundant number, since it is smaller than the sum of its proper divisors (700440).

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

670144 is a wasteful number, since it uses less digits than its factorization.

670144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 670144 is about 818.6232344614. The cubic root of 670144 is about 87.5096696797.

The spelling of 670144 in words is "six hundred seventy thousand, one hundred forty-four".