66208995 has 24 divisors (see below), whose sum is σ = 119014896. Its totient is φ = 35310816.

The previous prime is 66208993. The next prime is 66209009. The reversal of 66208995 is 59980266.

It is not a de Polignac number, because 66208995 - 2¹ = 66208993 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 66208995.

It is not an unprimeable number, because it can be changed into a prime (66208993) 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, 26032 + ... + 28461.

It is an arithmetic number, because the mean of its divisors is an integer number (4958954).

Almost surely, 2^66208995 is an apocalyptic number.

66208995 is a deficient number, since it is larger than the sum of its proper divisors (52805901).

66208995 is an equidigital number, since it uses as much as digits as its factorization.

66208995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54513 (or 54501 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 66208995 is about 8136.8909910358. The cubic root of 66208995 is about 404.5501177306.

The spelling of 66208995 in words is "sixty-six million, two hundred eight thousand, nine hundred ninety-five".