670055256 has 144 divisors (see below), whose sum is σ = 2004069600. Its totient is φ = 202086144.

The previous prime is 670055249. The next prime is 670055257. The reversal of 670055256 is 652550076.

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

It is a self number, because there is not a number n which added to its sum of digits gives 670055256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670055257) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 644385 + ... + 645423.

It is an arithmetic number, because the mean of its divisors is an integer number (13917150).

Almost surely, 2^670055256 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 670055256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002034800).

670055256 is an abundant number, since it is smaller than the sum of its proper divisors (1334014344).

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

670055256 is a wasteful number, since it uses less digits than its factorization.

670055256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 670055256 is about 25885.4255518429. The cubic root of 670055256 is about 875.0580667859.

The spelling of 670055256 in words is "six hundred seventy million, fifty-five thousand, two hundred fifty-six".