3651996 has 24 divisors (see below), whose sum is σ = 8560384. Its totient is φ = 1211760.

The previous prime is 3651983. The next prime is 3651997. The reversal of 3651996 is 6991563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2691 + ... + 3813.

Almost surely, 2^3651996 is an apocalyptic number.

It is an amenable number.

3651996 is an abundant number, since it is smaller than the sum of its proper divisors (4908388).

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

3651996 is a wasteful number, since it uses less digits than its factorization.

3651996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1399 counting only the distinct ones).

The product of its digits is 43740, while the sum is 39.

The square root of 3651996 is about 1911.0196231332. The cubic root of 3651996 is about 153.9962331119.

The spelling of 3651996 in words is "three million, six hundred fifty-one thousand, nine hundred ninety-six".