968628021 has 8 divisors (see below), whose sum is σ = 1309196160. Its totient is φ = 636905952.

The previous prime is 968627971. The next prime is 968628103. The reversal of 968628021 is 120826869.

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

It is not a de Polignac number, because 968628021 - 2¹⁸ = 968365877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (968628121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211261 + ... + 2211698.

It is an arithmetic number, because the mean of its divisors is an integer number (163649520).

Almost surely, 2^968628021 is an apocalyptic number.

It is an amenable number.

968628021 is a deficient number, since it is larger than the sum of its proper divisors (340568139).

968628021 is a wasteful number, since it uses less digits than its factorization.

968628021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423035.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 968628021 is about 31122.7894154750. The cubic root of 968628021 is about 989.4313712438.

The spelling of 968628021 in words is "nine hundred sixty-eight million, six hundred twenty-eight thousand, twenty-one".