768221868 has 24 divisors (see below), whose sum is σ = 1793149120. Its totient is φ = 255983760.

The previous prime is 768221849. The next prime is 768221869. The reversal of 768221868 is 868122867.

It is not an unprimeable number, because it can be changed into a prime (768221869) 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, 30363 + ... + 49581.

Almost surely, 2^768221868 is an apocalyptic number.

It is an amenable number.

768221868 is an abundant number, since it is smaller than the sum of its proper divisors (1024927252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

768221868 is a wasteful number, since it uses less digits than its factorization.

768221868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22557 (or 22555 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 768221868 is about 27716.8156179602. The cubic root of 768221868 is about 915.8595714755.

Subtracting 768221868 from its reverse (868122867), we obtain a palindrome (99900999).

The spelling of 768221868 in words is "seven hundred sixty-eight million, two hundred twenty-one thousand, eight hundred sixty-eight".