666671000007 has 16 divisors (see below), whose sum is σ = 903715614848. Its totient is φ = 437040874080.

The previous prime is 666670999957. The next prime is 666671000029. The reversal of 666671000007 is 700000176666.

It is not a de Polignac number, because 666671000007 - 2¹² = 666670995911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666671000057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166668 + ... + 1166670.

It is an arithmetic number, because the mean of its divisors is an integer number (56482225928).

Almost surely, 2^666671000007 is an apocalyptic number.

666671000007 is the 666669-th pentagonal number.

666671000007 is a deficient number, since it is larger than the sum of its proper divisors (237044614841).

666671000007 is a wasteful number, since it uses less digits than its factorization.

666671000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003710.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 666671000007 in words is "six hundred sixty-six billion, six hundred seventy-one million, seven", and thus it is an aban number.