666774474014 has 8 divisors (see below), whose sum is σ = 1091085502968. Its totient is φ = 303079306360.

The previous prime is 666774473993. The next prime is 666774474017. The reversal of 666774474014 is 410474477666.

It is a happy number.

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

It is a super-2 number, since 2×666774474014² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666774474017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15153965297 + ... + 15153965340.

It is an arithmetic number, because the mean of its divisors is an integer number (136385687871).

Almost surely, 2^666774474014 is an apocalyptic number.

666774474014 is a deficient number, since it is larger than the sum of its proper divisors (424311028954).

666774474014 is a wasteful number, since it uses less digits than its factorization.

666774474014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30307930650.

The product of its (nonzero) digits is 18966528, while the sum is 56.

The spelling of 666774474014 in words is "six hundred sixty-six billion, seven hundred seventy-four million, four hundred seventy-four thousand, fourteen".