6814772321 has 16 divisors (see below), whose sum is σ = 8114870400. Its totient is φ = 5599214208.

The previous prime is 6814772317. The next prime is 6814772357. The reversal of 6814772321 is 1232774186.

It is not a de Polignac number, because 6814772321 - 2² = 6814772317 is a prime.

It is a super-2 number, since 2×6814772321² = 92882243574135454082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6814772821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92540 + ... + 148973.

It is an arithmetic number, because the mean of its divisors is an integer number (507179400).

Almost surely, 2^6814772321 is an apocalyptic number.

It is an amenable number.

6814772321 is a deficient number, since it is larger than the sum of its proper divisors (1300098079).

6814772321 is a wasteful number, since it uses less digits than its factorization.

6814772321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241688.

The product of its digits is 112896, while the sum is 41.

The square root of 6814772321 is about 82551.6342721330. The cubic root of 6814772321 is about 1895.9073792377.

The spelling of 6814772321 in words is "six billion, eight hundred fourteen million, seven hundred seventy-two thousand, three hundred twenty-one".