668013084571 has 8 divisors (see below), whose sum is σ = 763457164544. Its totient is φ = 572572414440.

The previous prime is 668013084569. The next prime is 668013084587. The reversal of 668013084571 is 175480310866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 668013084571 - 2¹ = 668013084569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668013484571) 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, 417885 + ... + 1229086.

It is an arithmetic number, because the mean of its divisors is an integer number (95432145568).

Almost surely, 2^668013084571 is an apocalyptic number.

668013084571 is a deficient number, since it is larger than the sum of its proper divisors (95444079973).

668013084571 is a wasteful number, since it uses less digits than its factorization.

668013084571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704921.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 668013084571 in words is "six hundred sixty-eight billion, thirteen million, eighty-four thousand, five hundred seventy-one".