670650 has 48 divisors (see below), whose sum is σ = 1767744. Its totient is φ = 167680.

The previous prime is 670639. The next prime is 670669. The reversal of 670650 is 56076.

It is a self number, because there is not a number n which added to its sum of digits gives 670650.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (36828).

2⁶⁷⁰⁶⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883872).

670650 is an abundant number, since it is smaller than the sum of its proper divisors (1097094).

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

670650 is a wasteful number, since it uses less digits than its factorization.

670650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 670650 is about 818.9322316285. The cubic root of 670650 is about 87.5316892023.

The spelling of 670650 in words is "six hundred seventy thousand, six hundred fifty".