668848965 has 8 divisors (see below), whose sum is σ = 1070158368. Its totient is φ = 356719440.

The previous prime is 668848919. The next prime is 668848979. The reversal of 668848965 is 569848866.

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

It is not a de Polignac number, because 668848965 - 2¹³ = 668840773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668848899 and 668848908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22294951 + ... + 22294980.

It is an arithmetic number, because the mean of its divisors is an integer number (133769796).

Almost surely, 2^668848965 is an apocalyptic number.

It is an amenable number.

668848965 is a deficient number, since it is larger than the sum of its proper divisors (401309403).

668848965 is a wasteful number, since it uses less digits than its factorization.

668848965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44589939.

The product of its digits is 19906560, while the sum is 60.

The square root of 668848965 is about 25862.1144727186. The cubic root of 668848965 is about 874.5326331292.

Subtracting from 668848965 its reverse (569848866), we obtain a palindrome (99000099).

The spelling of 668848965 in words is "six hundred sixty-eight million, eight hundred forty-eight thousand, nine hundred sixty-five".