7197885720 has 256 divisors, whose sum is σ = 24416640000. Its totient is φ = 1885897728.

The previous prime is 7197885677. The next prime is 7197885743. The reversal of 7197885720 is 275887917.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22996284 + ... + 22996596.

It is an arithmetic number, because the mean of its divisors is an integer number (95377500).

Almost surely, 2^7197885720 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 7197885720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12208320000).

7197885720 is an abundant number, since it is smaller than the sum of its proper divisors (17218754280).

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

7197885720 is a wasteful number, since it uses less digits than its factorization.

7197885720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The square root of 7197885720 is about 84840.3543132630. The cubic root of 7197885720 is about 1930.7897400687.

The spelling of 7197885720 in words is "seven billion, one hundred ninety-seven million, eight hundred eighty-five thousand, seven hundred twenty".