6501897408 has 56 divisors (see below), whose sum is σ = 17246041200. Its totient is φ = 2161868800.

The previous prime is 6501897407. The next prime is 6501897419. The reversal of 6501897408 is 8047981056.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6501897407) 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, 34768 + ... + 119216.

Almost surely, 2^6501897408 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 6501897408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8623020600).

6501897408 is an abundant number, since it is smaller than the sum of its proper divisors (10744143792).

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

6501897408 is a wasteful number, since it uses less digits than its factorization.

6501897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84865 (or 84855 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 6501897408 is about 80634.3438492557. The cubic root of 6501897408 is about 1866.4371529607.

The spelling of 6501897408 in words is "six billion, five hundred one million, eight hundred ninety-seven thousand, four hundred eight".