66746614 has 16 divisors (see below), whose sum is σ = 110192400. Its totient is φ = 30069760.

The previous prime is 66746611. The next prime is 66746623. The reversal of 66746614 is 41664766.

It is a happy number.

It is a super-2 number, since 2×66746614² = 8910220960929992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66746611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10939 + ... + 15910.

It is an arithmetic number, because the mean of its divisors is an integer number (6887025).

Almost surely, 2^66746614 is an apocalyptic number.

66746614 is a deficient number, since it is larger than the sum of its proper divisors (43445786).

66746614 is a wasteful number, since it uses less digits than its factorization.

66746614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26975.

The product of its digits is 145152, while the sum is 40.

The square root of 66746614 is about 8169.8600967214. The cubic root of 66746614 is about 405.6421535667.

The spelling of 66746614 in words is "sixty-six million, seven hundred forty-six thousand, six hundred fourteen".