66039795 has 24 divisors (see below), whose sum is σ = 114660000. Its totient is φ = 35162496.

The previous prime is 66039793. The next prime is 66039797. The reversal of 66039795 is 59793066.

It is an interprime number because it is at equal distance from previous prime (66039793) and next prime (66039797).

It is not a de Polignac number, because 66039795 - 2¹ = 66039793 is a prime.

It is a super-2 number, since 2×66039795² = 8722509047284050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66039795.

It is not an unprimeable number, because it can be changed into a prime (66039791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46506 + ... + 47904.

It is an arithmetic number, because the mean of its divisors is an integer number (4777500).

Almost surely, 2^66039795 is an apocalyptic number.

66039795 is a deficient number, since it is larger than the sum of its proper divisors (48620205).

66039795 is a wasteful number, since it uses less digits than its factorization.

66039795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 66039795 is about 8126.4872484980. The cubic root of 66039795 is about 404.2052085445.

The spelling of 66039795 in words is "sixty-six million, thirty-nine thousand, seven hundred ninety-five".