3663620 has 24 divisors (see below), whose sum is σ = 7789824. Its totient is φ = 1447136.

The previous prime is 3663617. The next prime is 3663659. The reversal of 3663620 is 263663.

It is a happy number.

It is a super-2 number, since 2×3663620² = 26844223008800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3663620.

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, 557 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (324576).

Almost surely, 2^3663620 is an apocalyptic number.

It is an amenable number.

3663620 is an abundant number, since it is smaller than the sum of its proper divisors (4126204).

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

3663620 is a wasteful number, since it uses less digits than its factorization.

3663620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 3663620 is about 1914.0585153020. The cubic root of 3663620 is about 154.1594458106.

The spelling of 3663620 in words is "three million, six hundred sixty-three thousand, six hundred twenty".