7966968621 has 8 divisors (see below), whose sum is σ = 11247485184. Its totient is φ = 4998882240.

The previous prime is 7966968617. The next prime is 7966968629. The reversal of 7966968621 is 1268696697.

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

It is not a de Polignac number, because 7966968621 - 2² = 7966968617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966968629) 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, 78107485 + ... + 78107586.

It is an arithmetic number, because the mean of its divisors is an integer number (1405935648).

Almost surely, 2^7966968621 is an apocalyptic number.

It is an amenable number.

7966968621 is a deficient number, since it is larger than the sum of its proper divisors (3280516563).

7966968621 is a wasteful number, since it uses less digits than its factorization.

7966968621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156215091.

The product of its digits is 11757312, while the sum is 60.

The square root of 7966968621 is about 89257.8770809613. The cubic root of 7966968621 is about 1997.2435879248.

The spelling of 7966968621 in words is "seven billion, nine hundred sixty-six million, nine hundred sixty-eight thousand, six hundred twenty-one".