6535217240 has 32 divisors (see below), whose sum is σ = 15343555680. Its totient is φ = 2500430592.

The previous prime is 6535217239. The next prime is 6535217243. The reversal of 6535217240 is 427125356.

It is a self number, because there is not a number n which added to its sum of digits gives 6535217240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535217243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3550829 + ... + 3552668.

It is an arithmetic number, because the mean of its divisors is an integer number (479486115).

Almost surely, 2^6535217240 is an apocalyptic number.

It is an amenable number.

6535217240 is an abundant number, since it is smaller than the sum of its proper divisors (8808338440).

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

6535217240 is a wasteful number, since it uses less digits than its factorization.

6535217240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103531 (or 7103527 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 6535217240 is about 80840.6904968037. The cubic root of 6535217240 is about 1869.6199900796.

The spelling of 6535217240 in words is "six billion, five hundred thirty-five million, two hundred seventeen thousand, two hundred forty".