66222495 has 16 divisors (see below), whose sum is σ = 117729120. Its totient is φ = 35318592.

The previous prime is 66222487. The next prime is 66222509. The reversal of 66222495 is 59422266.

66222495 is a `hidden beast` number, since 6 + 622 + 24 + 9 + 5 = 666.

It is not a de Polignac number, because 66222495 - 2³ = 66222487 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245134 + ... + 245403.

It is an arithmetic number, because the mean of its divisors is an integer number (7358070).

Almost surely, 2^66222495 is an apocalyptic number.

66222495 is a deficient number, since it is larger than the sum of its proper divisors (51506625).

66222495 is a wasteful number, since it uses less digits than its factorization.

66222495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490551 (or 490545 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 66222495 is about 8137.7205039249. The cubic root of 66222495 is about 404.5776117563.

The spelling of 66222495 in words is "sixty-six million, two hundred twenty-two thousand, four hundred ninety-five".