3631990 has 8 divisors (see below), whose sum is σ = 6537600. Its totient is φ = 1452792.

The previous prime is 3631973. The next prime is 3632009. The reversal of 3631990 is 991363.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181590 + ... + 181609.

It is an arithmetic number, because the mean of its divisors is an integer number (817200).

Almost surely, 2^3631990 is an apocalyptic number.

3631990 is a deficient number, since it is larger than the sum of its proper divisors (2905610).

3631990 is a wasteful number, since it uses less digits than its factorization.

3631990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363206.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 3631990 is about 1905.7780563329. The cubic root of 3631990 is about 153.7145157938.

The spelling of 3631990 in words is "three million, six hundred thirty-one thousand, nine hundred ninety".