6697249720 has 64 divisors (see below), whose sum is σ = 17303270400. Its totient is φ = 2285297280.

The previous prime is 6697249711. The next prime is 6697249721. The reversal of 6697249720 is 279427966.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697249721) 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, 2401 + ... + 115759.

It is an arithmetic number, because the mean of its divisors is an integer number (270363600).

Almost surely, 2^6697249720 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 6697249720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8651635200).

6697249720 is an abundant number, since it is smaller than the sum of its proper divisors (10606020680).

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

6697249720 is a wasteful number, since it uses less digits than its factorization.

6697249720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113588 (or 113584 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 6697249720 is about 81836.7259853423. The cubic root of 6697249720 is about 1884.9456435859.

The spelling of 6697249720 in words is "six billion, six hundred ninety-seven million, two hundred forty-nine thousand, seven hundred twenty".