15916897 has 8 divisors (see below), whose sum is σ = 17015040. Its totient is φ = 14852640.

The previous prime is 15916891. The next prime is 15916931. The reversal of 15916897 is 79861951.

It is a happy number.

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 15916897 - 2¹⁵ = 15884129 is a prime.

It is a super-2 number, since 2×15916897² = 506695220217218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15916891) 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, 7497 + ... + 9382.

It is an arithmetic number, because the mean of its divisors is an integer number (2126880).

Almost surely, 2^15916897 is an apocalyptic number.

It is an amenable number.

15916897 is a deficient number, since it is larger than the sum of its proper divisors (1098143).

15916897 is a wasteful number, since it uses less digits than its factorization.

15916897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16943.

The product of its digits is 136080, while the sum is 46.

The square root of 15916897 is about 3989.5986013633. The cubic root of 15916897 is about 251.5471890711.

The spelling of 15916897 in words is "fifteen million, nine hundred sixteen thousand, eight hundred ninety-seven".