15960987 has 12 divisors (see below), whose sum is σ = 26348400. Its totient is φ = 9120528.

The previous prime is 15960961. The next prime is 15961009. The reversal of 15960987 is 78906951.

It is not a de Polignac number, because 15960987 - 2⁷ = 15960859 is a prime.

It is a super-3 number, since 3×15960987³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (15960187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126612 + ... + 126737.

It is an arithmetic number, because the mean of its divisors is an integer number (2195700).

Almost surely, 2^15960987 is an apocalyptic number.

15960987 is a deficient number, since it is larger than the sum of its proper divisors (10387413).

15960987 is a wasteful number, since it uses less digits than its factorization.

15960987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253362 (or 253359 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 15960987 is about 3995.1203986864. The cubic root of 15960987 is about 251.7792378769.

The spelling of 15960987 in words is "fifteen million, nine hundred sixty thousand, nine hundred eighty-seven".