66001045 has 16 divisors (see below), whose sum is σ = 86780160. Its totient is φ = 47790400.

The previous prime is 66001037. The next prime is 66001049. The reversal of 66001045 is 54010066.

It is not a de Polignac number, because 66001045 - 2³ = 66001037 is a prime.

It is a super-2 number, since 2×66001045² = 8712275882184050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66001049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10635 + ... + 15655.

It is an arithmetic number, because the mean of its divisors is an integer number (5423760).

Almost surely, 2^66001045 is an apocalyptic number.

It is an amenable number.

66001045 is a deficient number, since it is larger than the sum of its proper divisors (20779115).

66001045 is a wasteful number, since it uses less digits than its factorization.

66001045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 66001045 is about 8124.1027196854. The cubic root of 66001045 is about 404.1261349276.

The spelling of 66001045 in words is "sixty-six million, one thousand, forty-five".