666733414 has 16 divisors (see below), whose sum is σ = 1032021936. Its totient is φ = 322812000.

The previous prime is 666733411. The next prime is 666733423. The reversal of 666733414 is 414337666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666733411) 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, 5737 + ... + 36964.

It is an arithmetic number, because the mean of its divisors is an integer number (64501371).

Almost surely, 2^666733414 is an apocalyptic number.

666733414 is a deficient number, since it is larger than the sum of its proper divisors (365288522).

666733414 is a wasteful number, since it uses less digits than its factorization.

666733414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42951.

The product of its digits is 217728, while the sum is 40.

The square root of 666733414 is about 25821.1814989167. The cubic root of 666733414 is about 873.6096183466.

The spelling of 666733414 in words is "six hundred sixty-six million, seven hundred thirty-three thousand, four hundred fourteen".