3642990 has 32 divisors (see below), whose sum is σ = 9416736. Its totient is φ = 896640.

The previous prime is 3642971. The next prime is 3643001. The reversal of 3642990 is 992463.

It is a super-2 number, since 2×3642990² = 26542752280200, 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 15 ways as a sum of consecutive naturals, for example, 4281 + ... + 5060.

It is an arithmetic number, because the mean of its divisors is an integer number (294273).

Almost surely, 2^3642990 is an apocalyptic number.

3642990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3642990 is an abundant number, since it is smaller than the sum of its proper divisors (5773746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3642990 is a wasteful number, since it uses less digits than its factorization.

3642990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9364.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 3642990 is about 1908.6618348990. The cubic root of 3642990 is about 153.8695415085.

The spelling of 3642990 in words is "three million, six hundred forty-two thousand, nine hundred ninety".