15961065 has 16 divisors (see below), whose sum is σ = 25594368. Its totient is φ = 8493696.

The previous prime is 15961039. The next prime is 15961067. The reversal of 15961065 is 56016951.

It is not a de Polignac number, because 15961065 - 2¹⁷ = 15829993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15961067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8229 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (1599648).

Almost surely, 2^15961065 is an apocalyptic number.

15961065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15961065 is a deficient number, since it is larger than the sum of its proper divisors (9633303).

15961065 is a wasteful number, since it uses less digits than its factorization.

15961065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 15961065 is about 3995.1301605830. The cubic root of 15961065 is about 251.7796480176.

The spelling of 15961065 in words is "fifteen million, nine hundred sixty-one thousand, sixty-five".