6537897400 has 192 divisors, whose sum is σ = 16603937280. Its totient is φ = 2384640000.

The previous prime is 6537897371. The next prime is 6537897403. The reversal of 6537897400 is 47987356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6537897403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26047275 + ... + 26047525.

It is an arithmetic number, because the mean of its divisors is an integer number (86478840).

Almost surely, 2^6537897400 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 6537897400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8301968640).

6537897400 is an abundant number, since it is smaller than the sum of its proper divisors (10066039880).

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

6537897400 is a wasteful number, since it uses less digits than its factorization.

6537897400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 6537897400 is about 80857.2655980896. The cubic root of 6537897400 is about 1869.8755386294.

The spelling of 6537897400 in words is "six billion, five hundred thirty-seven million, eight hundred ninety-seven thousand, four hundred".