6989271288 has 64 divisors (see below), whose sum is σ = 18014261760. Its totient is φ = 2258096256.

The previous prime is 6989271287. The next prime is 6989271301. The reversal of 6989271288 is 8821729896.

It is a super-2 number, since 2×6989271288² = 97699826274522357888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989271283) 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, 218581 + ... + 248507.

It is an arithmetic number, because the mean of its divisors is an integer number (281472840).

Almost surely, 2^6989271288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6989271288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9007130880).

6989271288 is an abundant number, since it is smaller than the sum of its proper divisors (11024990472).

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

6989271288 is a wasteful number, since it uses less digits than its factorization.

6989271288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30236 (or 30232 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The square root of 6989271288 is about 83601.8617496046. The cubic root of 6989271288 is about 1911.9533836373.

The spelling of 6989271288 in words is "six billion, nine hundred eighty-nine million, two hundred seventy-one thousand, two hundred eighty-eight".