66205095 has 16 divisors (see below), whose sum is σ = 115558272. Its totient is φ = 32099360.

The previous prime is 66205091. The next prime is 66205127. The reversal of 66205095 is 59050266.

It is not a de Polignac number, because 66205095 - 2² = 66205091 is a prime.

It is a super-2 number, since 2×66205095² = 8766229207918050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66205091) 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, 200457 + ... + 200786.

It is an arithmetic number, because the mean of its divisors is an integer number (7222392).

Almost surely, 2^66205095 is an apocalyptic number.

66205095 is a deficient number, since it is larger than the sum of its proper divisors (49353177).

66205095 is a wasteful number, since it uses less digits than its factorization.

66205095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401262.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 66205095 is about 8136.6513382349. The cubic root of 66205095 is about 404.5421743163.

The spelling of 66205095 in words is "sixty-six million, two hundred five thousand, ninety-five".