66745150 has 12 divisors (see below), whose sum is σ = 124146072. Its totient is φ = 26698040.

The previous prime is 66745117. The next prime is 66745187. The reversal of 66745150 is 5154766.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 667402 + ... + 667501.

It is an arithmetic number, because the mean of its divisors is an integer number (10345506).

Almost surely, 2^66745150 is an apocalyptic number.

66745150 is a deficient number, since it is larger than the sum of its proper divisors (57400922).

66745150 is a wasteful number, since it uses less digits than its factorization.

66745150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334915 (or 1334910 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 66745150 is about 8169.7704986126. The cubic root of 66745150 is about 405.6391878010.

The spelling of 66745150 in words is "sixty-six million, seven hundred forty-five thousand, one hundred fifty".