694490 has 16 divisors (see below), whose sum is σ = 1284552. Its totient is φ = 270144.

The previous prime is 694487. The next prime is 694511. The reversal of 694490 is 94496.

It is a happy number.

694490 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 4 ways, for example, as 674041 + 20449 = 821^2 + 143^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569 + ... + 1308.

2⁶⁹⁴⁴⁹⁰ is an apocalyptic number.

694490 is a deficient number, since it is larger than the sum of its proper divisors (590062).

694490 is a wasteful number, since it uses less digits than its factorization.

694490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 694490 is about 833.3606662184. The cubic root of 694490 is about 88.5568171229.

The spelling of 694490 in words is "six hundred ninety-four thousand, four hundred ninety".