670490 has 8 divisors (see below), whose sum is σ = 1206900. Its totient is φ = 268192.

The previous prime is 670489. The next prime is 670493. The reversal of 670490 is 94076.

670490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 657721 + 12769 = 811^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670490.

It is not an unprimeable number, because it can be changed into a prime (670493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33515 + ... + 33534.

2⁶⁷⁰⁴⁹⁰ is an apocalyptic number.

670490 is a deficient number, since it is larger than the sum of its proper divisors (536410).

670490 is a wasteful number, since it uses less digits than its factorization.

670490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67056.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 670490 is about 818.8345376204. The cubic root of 670490 is about 87.5247277051.

The spelling of 670490 in words is "six hundred seventy thousand, four hundred ninety".