666680134 has 8 divisors (see below), whose sum is σ = 1027047888. Its totient is φ = 324330840.

The previous prime is 666680099. The next prime is 666680137. The reversal of 666680134 is 431086666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666680137) 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, 4504522 + ... + 4504669.

It is an arithmetic number, because the mean of its divisors is an integer number (128380986).

Almost surely, 2^666680134 is an apocalyptic number.

666680134 is a deficient number, since it is larger than the sum of its proper divisors (360367754).

666680134 is a wasteful number, since it uses less digits than its factorization.

666680134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9009230.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 666680134 is about 25820.1497671876. The cubic root of 666680134 is about 873.5863470963.

The spelling of 666680134 in words is "six hundred sixty-six million, six hundred eighty thousand, one hundred thirty-four".