6621724966 has 8 divisors (see below), whose sum is σ = 9951580584. Its totient is φ = 3304531440.

The previous prime is 6621724957. The next prime is 6621724969. The reversal of 6621724966 is 6694271266.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621724969) 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, 3164215 + ... + 3166306.

It is an arithmetic number, because the mean of its divisors is an integer number (1243947573).

Almost surely, 2^6621724966 is an apocalyptic number.

6621724966 is a deficient number, since it is larger than the sum of its proper divisors (3329855618).

6621724966 is a wasteful number, since it uses less digits than its factorization.

6621724966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331046.

The product of its digits is 1306368, while the sum is 49.

The square root of 6621724966 is about 81373.9821195940. The cubic root of 6621724966 is about 1877.8333427394.

The spelling of 6621724966 in words is "six billion, six hundred twenty-one million, seven hundred twenty-four thousand, nine hundred sixty-six".