666746614 has 16 divisors (see below), whose sum is σ = 1016828208. Its totient is φ = 327821472.

The previous prime is 666746603. The next prime is 666746617. The reversal of 666746614 is 416647666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666746617) 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, 78084 + ... + 86200.

It is an arithmetic number, because the mean of its divisors is an integer number (63551763).

Almost surely, 2^666746614 is an apocalyptic number.

666746614 is a deficient number, since it is larger than the sum of its proper divisors (350081594).

666746614 is a wasteful number, since it uses less digits than its factorization.

666746614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8799.

The product of its digits is 870912, while the sum is 46.

The square root of 666746614 is about 25821.4371017571. The cubic root of 666746614 is about 873.6153835548.

The spelling of 666746614 in words is "six hundred sixty-six million, seven hundred forty-six thousand, six hundred fourteen".