6722985438 has 48 divisors (see below), whose sum is σ = 16193014656. Its totient is φ = 2001879360.

The previous prime is 6722985431. The next prime is 6722985449. The reversal of 6722985438 is 8345892276.

6722985438 is a `hidden beast` number, since 6 + 7 + 2 + 2 + 98 + 543 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6722985431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456145 + ... + 470652.

It is an arithmetic number, because the mean of its divisors is an integer number (337354472).

Almost surely, 2^6722985438 is an apocalyptic number.

6722985438 is an abundant number, since it is smaller than the sum of its proper divisors (9470029218).

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

6722985438 is a wasteful number, since it uses less digits than its factorization.

6722985438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926849 (or 926846 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 6722985438 is about 81993.8134129643. The cubic root of 6722985438 is about 1887.3570027948.

The spelling of 6722985438 in words is "six billion, seven hundred twenty-two million, nine hundred eighty-five thousand, four hundred thirty-eight".