647342967398399 has 8 divisors (see below), whose sum is σ = 649425528116400. Its totient is φ = 645261707880000.

The previous prime is 647342967398333. The next prime is 647342967398417. The reversal of 647342967398399 is 993893769243746.

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 647342967398399 - 2²⁰ = 647342966349823 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 (647342967398899) 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, 324303302 + ... + 326293299.

It is an arithmetic number, because the mean of its divisors is an integer number (81178191014550).

Almost surely, 2^{647342967398399} is an apocalyptic number.

647342967398399 is a deficient number, since it is larger than the sum of its proper divisors (2082560718001).

647342967398399 is a wasteful number, since it uses less digits than its factorization.

647342967398399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650599801.

The product of its digits is 79996750848, while the sum is 89.

The spelling of 647342967398399 in words is "six hundred forty-seven trillion, three hundred forty-two billion, nine hundred sixty-seven million, three hundred ninety-eight thousand, three hundred ninety-nine".