6721906682 has 8 divisors (see below), whose sum is σ = 10224872352. Its totient is φ = 3313615900.

The previous prime is 6721906627. The next prime is 6721906693. The reversal of 6721906682 is 2866091276.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23668544 + ... + 23668827.

It is an arithmetic number, because the mean of its divisors is an integer number (1278109044).

Almost surely, 2^6721906682 is an apocalyptic number.

6721906682 is a deficient number, since it is larger than the sum of its proper divisors (3502965670).

6721906682 is a wasteful number, since it uses less digits than its factorization.

6721906682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47337444.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 6721906682 is about 81987.2348722653. The cubic root of 6721906682 is about 1887.2560502931.

The spelling of 6721906682 in words is "six billion, seven hundred twenty-one million, nine hundred six thousand, six hundred eighty-two".