66225146 has 16 divisors (see below), whose sum is σ = 112610400. Its totient is φ = 28956528.

The previous prime is 66225139. The next prime is 66225157. The reversal of 66225146 is 64152266.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66536 + ... + 67523.

It is an arithmetic number, because the mean of its divisors is an integer number (7038150).

Almost surely, 2^66225146 is an apocalyptic number.

66225146 is a deficient number, since it is larger than the sum of its proper divisors (46385254).

66225146 is a wasteful number, since it uses less digits than its factorization.

66225146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134093.

The product of its digits is 17280, while the sum is 32.

The square root of 66225146 is about 8137.8833857460. The cubic root of 66225146 is about 404.5830103294.

The spelling of 66225146 in words is "sixty-six million, two hundred twenty-five thousand, one hundred forty-six".