3996615 has 32 divisors (see below), whose sum is σ = 7741440. Its totient is φ = 1718784.

The previous prime is 3996589. The next prime is 3996647. The reversal of 3996615 is 5166993.

It is not a de Polignac number, because 3996615 - 2⁵ = 3996583 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 666 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (241920).

Almost surely, 2^3996615 is an apocalyptic number.

3996615 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3996615 is a deficient number, since it is larger than the sum of its proper divisors (3744825).

3996615 is a wasteful number, since it uses less digits than its factorization.

3996615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

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

The square root of 3996615 is about 1999.1535708894. The cubic root of 3996615 is about 158.6953146218.

The spelling of 3996615 in words is "three million, nine hundred ninety-six thousand, six hundred fifteen".