968221511 has 4 divisors (see below), whose sum is σ = 972487032. Its totient is φ = 963955992.

The previous prime is 968221487. The next prime is 968221523. The reversal of 968221511 is 115122869.

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

It is a cyclic number.

It is not a de Polignac number, because 968221511 - 2¹⁴ = 968205127 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 (968221531) 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, 2132420 + ... + 2132873.

It is an arithmetic number, because the mean of its divisors is an integer number (243121758).

Almost surely, 2^968221511 is an apocalyptic number.

968221511 is a deficient number, since it is larger than the sum of its proper divisors (4265521).

968221511 is a wasteful number, since it uses less digits than its factorization.

968221511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265520.

The product of its digits is 8640, while the sum is 35.

The square root of 968221511 is about 31116.2579851755. The cubic root of 968221511 is about 989.2929383202.

The spelling of 968221511 in words is "nine hundred sixty-eight million, two hundred twenty-one thousand, five hundred eleven".