3968615 has 16 divisors (see below), whose sum is σ = 5486400. Its totient is φ = 2699520.

The previous prime is 3968603. The next prime is 3968617. The reversal of 3968615 is 5168693.

It is not a de Polignac number, because 3968615 - 2⁶ = 3968551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4835 + ... + 5595.

It is an arithmetic number, because the mean of its divisors is an integer number (342900).

Almost surely, 2^3968615 is an apocalyptic number.

3968615 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3968615 is a deficient number, since it is larger than the sum of its proper divisors (1517785).

3968615 is a wasteful number, since it uses less digits than its factorization.

3968615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922.

The product of its digits is 38880, while the sum is 38.

The square root of 3968615 is about 1992.1382984120. The cubic root of 3968615 is about 158.3238430754.

The spelling of 3968615 in words is "three million, nine hundred sixty-eight thousand, six hundred fifteen".