3663615 has 16 divisors (see below), whose sum is σ = 5885568. Its totient is φ = 1946016.

The previous prime is 3663587. The next prime is 3663617. The reversal of 3663615 is 5163663.

It is not a de Polignac number, because 3663615 - 2¹⁰ = 3662591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6744 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (367848).

Almost surely, 2^3663615 is an apocalyptic number.

3663615 is a deficient number, since it is larger than the sum of its proper divisors (2221953).

3663615 is a wasteful number, since it uses less digits than its factorization.

3663615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 9720, while the sum is 30.

The square root of 3663615 is about 1914.0572091764. The cubic root of 3663615 is about 154.1593756799.

It can be divided in two parts, 3663 and 615, that added together give a triangular number (4278 = T₉₂).

The spelling of 3663615 in words is "three million, six hundred sixty-three thousand, six hundred fifteen".