3491690 has 16 divisors (see below), whose sum is σ = 6455592. Its totient is φ = 1358784.

The previous prime is 3491689. The next prime is 3491707. The reversal of 3491690 is 961943.

It can be written as a sum of positive squares in 4 ways, for example, as 3352561 + 139129 = 1831^2 + 373^2 .

It is a super-2 number, since 2×3491690² = 24383798112200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 4349 + ... + 5088.

Almost surely, 2^3491690 is an apocalyptic number.

3491690 is a deficient number, since it is larger than the sum of its proper divisors (2963902).

3491690 is a wasteful number, since it uses less digits than its factorization.

3491690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3491690 is about 1868.6064326123. The cubic root of 3491690 is about 151.7091912048.

The spelling of 3491690 in words is "three million, four hundred ninety-one thousand, six hundred ninety".