66095231 has 4 divisors (see below), whose sum is σ = 66112032. Its totient is φ = 66078432.

The previous prime is 66095191. The next prime is 66095251. The reversal of 66095231 is 13259066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66095231 - 2¹⁸ = 65833087 is a prime.

It is a super-2 number, since 2×66095231² = 8737159121886722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66095251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (16528008).

Almost surely, 2^66095231 is an apocalyptic number.

66095231 is a deficient number, since it is larger than the sum of its proper divisors (16801).

66095231 is a wasteful number, since it uses less digits than its factorization.

66095231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 66095231 is about 8129.8973548256. The cubic root of 66095231 is about 404.3182780101.

The spelling of 66095231 in words is "sixty-six million, ninety-five thousand, two hundred thirty-one".