6726221634 has 32 divisors (see below), whose sum is σ = 14861168640. Its totient is φ = 2012446800.

The previous prime is 6726221611. The next prime is 6726221639. The reversal of 6726221634 is 4361226276.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6726221592 and 6726221601.

It is not an unprimeable number, because it can be changed into a prime (6726221639) 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, 639802 + ... + 650229.

It is an arithmetic number, because the mean of its divisors is an integer number (464411520).

Almost surely, 2^6726221634 is an apocalyptic number.

6726221634 is an abundant number, since it is smaller than the sum of its proper divisors (8134947006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6726221634 is a wasteful number, since it uses less digits than its factorization.

6726221634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290126.

The product of its digits is 145152, while the sum is 39.

The square root of 6726221634 is about 82013.5454300081. The cubic root of 6726221634 is about 1887.6597887853.

The spelling of 6726221634 in words is "six billion, seven hundred twenty-six million, two hundred twenty-one thousand, six hundred thirty-four".