66165003 has 48 divisors (see below), whose sum is σ = 105636960. Its totient is φ = 39739392.

The previous prime is 66164993. The next prime is 66165017. The reversal of 66165003 is 30056166.

66165003 is a `hidden beast` number, since 6 + 6 + 1 + 650 + 0 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-66165003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66165703) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 585475 + ... + 585587.

It is an arithmetic number, because the mean of its divisors is an integer number (2200770).

Almost surely, 2^66165003 is an apocalyptic number.

66165003 is a deficient number, since it is larger than the sum of its proper divisors (39471957).

66165003 is a wasteful number, since it uses less digits than its factorization.

66165003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 66165003 is about 8134.1872980649. The cubic root of 66165003 is about 404.4604979243.

The spelling of 66165003 in words is "sixty-six million, one hundred sixty-five thousand, three".