66235995 has 192 divisors, whose sum is σ = 157593600. Its totient is φ = 26127360.

The previous prime is 66235993. The next prime is 66235997. The reversal of 66235995 is 59953266.

It is an interprime number because it is at equal distance from previous prime (66235993) and next prime (66235997).

It is not a de Polignac number, because 66235995 - 2¹ = 66235993 is a prime.

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 66235995.

It is not an unprimeable number, because it can be changed into a prime (66235993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2136630 + ... + 2136660.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^66235995 is an apocalyptic number.

66235995 is an abundant number, since it is smaller than the sum of its proper divisors (91357605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66235995 is a wasteful number, since it uses less digits than its factorization.

66235995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 82 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 66235995 is about 8138.5499322668. The cubic root of 66235995 is about 404.6051020457.

The spelling of 66235995 in words is "sixty-six million, two hundred thirty-five thousand, nine hundred ninety-five".