6506864 has 80 divisors (see below), whose sum is σ = 16040640. Its totient is φ = 2488320.

The previous prime is 6506813. The next prime is 6506881. The reversal of 6506864 is 4686056.

It is a super-2 number, since 2×6506864² = 84678558228992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59642 + ... + 59750.

It is an arithmetic number, because the mean of its divisors is an integer number (200508).

Almost surely, 2^6506864 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 6506864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8020320).

6506864 is an abundant number, since it is smaller than the sum of its proper divisors (9533776).

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

6506864 is a wasteful number, since it uses less digits than its factorization.

6506864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 6506864 is about 2550.8555427542. The cubic root of 6506864 is about 186.6912269271.

The spelling of 6506864 in words is "six million, five hundred six thousand, eight hundred sixty-four".