670444560 has 160 divisors (see below), whose sum is σ = 2339136000. Its totient is φ = 176477184.

The previous prime is 670444543. The next prime is 670444603. The reversal of 670444560 is 65444076.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168676 + ... + 172604.

It is an arithmetic number, because the mean of its divisors is an integer number (14619600).

Almost surely, 2^670444560 is an apocalyptic number.

670444560 is a gapful number since it is divisible by the number (60) 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 670444560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169568000).

670444560 is an abundant number, since it is smaller than the sum of its proper divisors (1668691440).

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

670444560 is a wasteful number, since it uses less digits than its factorization.

670444560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 670444560 is about 25892.9442126615. The cubic root of 670444560 is about 875.2275043800.

The spelling of 670444560 in words is "six hundred seventy million, four hundred forty-four thousand, five hundred sixty".