670290 has 16 divisors (see below), whose sum is σ = 1608768. Its totient is φ = 178736.

The previous prime is 670279. The next prime is 670297. The reversal of 670290 is 92076.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 670290.

It is not an unprimeable number, because it can be changed into a prime (670297) by changing a digit.

670290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11142 + ... + 11201.

It is an arithmetic number, because the mean of its divisors is an integer number (100548).

2⁶⁷⁰²⁹⁰ is an apocalyptic number.

670290 is an abundant number, since it is smaller than the sum of its proper divisors (938478).

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

670290 is a wasteful number, since it uses less digits than its factorization.

670290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22353.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 670290 is about 818.7124037170. The cubic root of 670290 is about 87.5160242761.

The spelling of 670290 in words is "six hundred seventy thousand, two hundred ninety".