662364813217 has 4 divisors (see below), whose sum is σ = 685204979220. Its totient is φ = 639524647216.

The previous prime is 662364813211. The next prime is 662364813223. The reversal of 662364813217 is 712318463266.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (662364813211) and next prime (662364813223).

It can be written as a sum of positive squares in 2 ways, for example, as 454395979921 + 207968833296 = 674089^2 + 456036^2 .

It is a cyclic number.

It is not a de Polignac number, because 662364813217 - 2³⁹ = 112608999329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662364813211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11420082958 + ... + 11420083015.

It is an arithmetic number, because the mean of its divisors is an integer number (171301244805).

Almost surely, 2^662364813217 is an apocalyptic number.

It is an amenable number.

662364813217 is a deficient number, since it is larger than the sum of its proper divisors (22840166003).

662364813217 is a wasteful number, since it uses less digits than its factorization.

662364813217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22840166002.

The product of its digits is 1741824, while the sum is 49.

The spelling of 662364813217 in words is "six hundred sixty-two billion, three hundred sixty-four million, eight hundred thirteen thousand, two hundred seventeen".