66030015 has 16 divisors (see below), whose sum is σ = 108504288. Its totient is φ = 34263936.

The previous prime is 66030007. The next prime is 66030047. The reversal of 66030015 is 51003066.

It is not a de Polignac number, because 66030015 - 2³ = 66030007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66029973 and 66030000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58932 + ... + 60041.

It is an arithmetic number, because the mean of its divisors is an integer number (6781518).

Almost surely, 2^66030015 is an apocalyptic number.

66030015 is a deficient number, since it is larger than the sum of its proper divisors (42474273).

66030015 is a wasteful number, since it uses less digits than its factorization.

66030015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119018.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 66030015 is about 8125.8854902097. The cubic root of 66030015 is about 404.1852543027.

The spelling of 66030015 in words is "sixty-six million, thirty thousand, fifteen".