66606674 has 8 divisors (see below), whose sum is σ = 100697088. Its totient is φ = 33040980.

The previous prime is 66606667. The next prime is 66606677. The reversal of 66606674 is 47660666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66606677) 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, 130862 + ... + 131369.

It is an arithmetic number, because the mean of its divisors is an integer number (12587136).

Almost surely, 2^66606674 is an apocalyptic number.

66606674 is a deficient number, since it is larger than the sum of its proper divisors (34090414).

66606674 is a wasteful number, since it uses less digits than its factorization.

66606674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262360.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 66606674 is about 8161.2911968634. The cubic root of 66606674 is about 405.3584673634.

The spelling of 66606674 in words is "sixty-six million, six hundred six thousand, six hundred seventy-four".