666734807414 has 16 divisors (see below), whose sum is σ = 1082672075520. Its totient is φ = 306112635840.

The previous prime is 666734807413. The next prime is 666734807467. The reversal of 666734807414 is 414708437666.

It is a self number, because there is not a number n which added to its sum of digits gives 666734807414.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666734807413) 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, 67124999 + ... + 67134930.

It is an arithmetic number, because the mean of its divisors is an integer number (67667004720).

Almost surely, 2^666734807414 is an apocalyptic number.

666734807414 is a deficient number, since it is larger than the sum of its proper divisors (415937268106).

666734807414 is a wasteful number, since it uses less digits than its factorization.

666734807414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134260135.

The product of its (nonzero) digits is 16257024, while the sum is 56.

The spelling of 666734807414 in words is "six hundred sixty-six billion, seven hundred thirty-four million, eight hundred seven thousand, four hundred fourteen".