15000066 has 20 divisors (see below), whose sum is σ = 33611622. Its totient is φ = 4999968.

The previous prime is 15000053. The next prime is 15000067. The reversal of 15000066 is 66000051.

It can be written as a sum of positive squares in only one way, i.e., 8874441 + 6125625 = 2979^2 + 2475^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15000067) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 46135 + ... + 46458.

Almost surely, 2^15000066 is an apocalyptic number.

15000066 is an abundant number, since it is smaller than the sum of its proper divisors (18611556).

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

15000066 is an equidigital number, since it uses as much as digits as its factorization.

15000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92607 (or 92598 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 15000066 is about 3872.9918667614. The cubic root of 15000066 is about 246.6215691436.

The spelling of 15000066 in words is "fifteen million, sixty-six", and thus it is an aban number and an uban number.