6997272720 has 40 divisors (see below), whose sum is σ = 21691546176. Its totient is φ = 1865939328.

The previous prime is 6997272703. The next prime is 6997272757. The reversal of 6997272720 is 272727996.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14577412 + ... + 14577891.

Almost surely, 2^6997272720 is an apocalyptic number.

6997272720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6997272720 is an abundant number, since it is smaller than the sum of its proper divisors (14694273456).

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

6997272720 is a wasteful number, since it uses less digits than its factorization.

6997272720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29155319 (or 29155313 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 51.

The square root of 6997272720 is about 83649.7024501582. The cubic root of 6997272720 is about 1912.6827172176.

The spelling of 6997272720 in words is "six billion, nine hundred ninety-seven million, two hundred seventy-two thousand, seven hundred twenty".