2003690 has 16 divisors (see below), whose sum is σ = 3884328. Its totient is φ = 739776.

The previous prime is 2003681. The next prime is 2003723. The reversal of 2003690 is 963002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1620529 + 383161 = 1273^2 + 619^2 .

It is a super-2 number, since 2×2003690² = 8029547232200, which contains 22 as substring.

2003690 is a modest number, since divided by 3690 gives 20 as remainder.

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, 7577 + ... + 7836.

2^2003690 is an apocalyptic number.

2003690 is a deficient number, since it is larger than the sum of its proper divisors (1880638).

2003690 is a wasteful number, since it uses less digits than its factorization.

2003690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15433.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2003690 is about 1415.5175731866. The cubic root of 2003690 is about 126.0695425295.

Adding to 2003690 its reverse (963002), we get a palindrome (2966692).

The spelling of 2003690 in words is "two million, three thousand, six hundred ninety".