664466442267 has 8 divisors (see below), whose sum is σ = 885959930896. Its totient is φ = 442975290912.

The previous prime is 664466442259. The next prime is 664466442331. The reversal of 664466442267 is 762244664466.

It is a happy number.

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

It is not a de Polignac number, because 664466442267 - 2³ = 664466442259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664466442257) 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, 248673 + ... + 1179309.

It is an arithmetic number, because the mean of its divisors is an integer number (110744991362).

Almost surely, 2^664466442267 is an apocalyptic number.

664466442267 is a deficient number, since it is larger than the sum of its proper divisors (221493488629).

664466442267 is a wasteful number, since it uses less digits than its factorization.

664466442267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168637.

The product of its digits is 55738368, while the sum is 57.

The spelling of 664466442267 in words is "six hundred sixty-four billion, four hundred sixty-six million, four hundred forty-two thousand, two hundred sixty-seven".