15993066 has 16 divisors (see below), whose sum is σ = 32667264. Its totient is φ = 5217504.

The previous prime is 15993053. The next prime is 15993143. The reversal of 15993066 is 66039951.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28075 + ... + 28638.

It is an arithmetic number, because the mean of its divisors is an integer number (2041704).

Almost surely, 2^15993066 is an apocalyptic number.

15993066 is an abundant number, since it is smaller than the sum of its proper divisors (16674198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15993066 is a wasteful number, since it uses less digits than its factorization.

15993066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56765.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 15993066 is about 3999.1331560727. The cubic root of 15993066 is about 251.9478035002.

The spelling of 15993066 in words is "fifteen million, nine hundred ninety-three thousand, sixty-six".