15996995 has 8 divisors (see below), whose sum is σ = 21938784. Its totient is φ = 10969344.

The previous prime is 15996971. The next prime is 15996997. The reversal of 15996995 is 59969951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15996995 - 2²⁰ = 14948419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15996997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228494 + ... + 228563.

It is an arithmetic number, because the mean of its divisors is an integer number (2742348).

Almost surely, 2^15996995 is an apocalyptic number.

15996995 is a deficient number, since it is larger than the sum of its proper divisors (5941789).

15996995 is an equidigital number, since it uses as much as digits as its factorization.

15996995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457069.

The product of its digits is 984150, while the sum is 53.

The square root of 15996995 is about 3999.6243573616. The cubic root of 15996995 is about 251.9684337298.

The spelling of 15996995 in words is "fifteen million, nine hundred ninety-six thousand, nine hundred ninety-five".