670626 has 32 divisors (see below), whose sum is σ = 1627200. Its totient is φ = 203040.

The previous prime is 670619. The next prime is 670627. The reversal of 670626 is 626076.

670626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 670626.

It is not an unprimeable number, because it can be changed into a prime (670627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (50850).

2⁶⁷⁰⁶²⁶ is an apocalyptic number.

670626 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 670626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813600).

670626 is an abundant number, since it is smaller than the sum of its proper divisors (956574).

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

670626 is a wasteful number, since it uses less digits than its factorization.

670626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 670626 is about 818.9175782702. The cubic root of 670626 is about 87.5306450483.

It can be divided in two parts, 670 and 626, that added together give a 4-th power (1296 = 6⁴).

The spelling of 670626 in words is "six hundred seventy thousand, six hundred twenty-six".