666740134 has 16 divisors (see below), whose sum is σ = 1059822000. Its totient is φ = 313701984.

The previous prime is 666740117. The next prime is 666740161. The reversal of 666740134 is 431047666.

It is a junction number, because it is equal to n+sod(n) for n = 666740093 and 666740102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53217 + ... + 64540.

It is an arithmetic number, because the mean of its divisors is an integer number (66238875).

Almost surely, 2^666740134 is an apocalyptic number.

666740134 is a deficient number, since it is larger than the sum of its proper divisors (393081866).

666740134 is a wasteful number, since it uses less digits than its factorization.

666740134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117927.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 666740134 is about 25821.3116243153. The cubic root of 666740134 is about 873.6125533712.

The spelling of 666740134 in words is "six hundred sixty-six million, seven hundred forty thousand, one hundred thirty-four".