15608961 has 12 divisors (see below), whose sum is σ = 22613760. Its totient is φ = 10374840.

The previous prime is 15608953. The next prime is 15608969. The reversal of 15608961 is 16980651.

15608961 is a `hidden beast` number, since 1 + 560 + 8 + 96 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (15608953) and next prime (15608969).

It is not a de Polignac number, because 15608961 - 2³ = 15608953 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (15608969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 816 + ... + 5646.

It is an arithmetic number, because the mean of its divisors is an integer number (1884480).

Almost surely, 2^15608961 is an apocalyptic number.

It is an amenable number.

15608961 is a deficient number, since it is larger than the sum of its proper divisors (7004799).

15608961 is a wasteful number, since it uses less digits than its factorization.

15608961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196 (or 5193 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 15608961 is about 3950.8177634510. The cubic root of 15608961 is about 249.9144293807.

The spelling of 15608961 in words is "fifteen million, six hundred eight thousand, nine hundred sixty-one".