6501632 has 36 divisors (see below), whose sum is σ = 13153140. Its totient is φ = 3207168.

The previous prime is 6501631. The next prime is 6501637. The reversal of 6501632 is 2361056.

It can be written as a sum of positive squares in 2 ways, for example, as 2876416 + 3625216 = 1696^2 + 1904^2 .

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 6501598 and 6501607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27788 + ... + 28020.

It is an arithmetic number, because the mean of its divisors is an integer number (365365).

Almost surely, 2^6501632 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 6501632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6576570).

6501632 is an abundant number, since it is smaller than the sum of its proper divisors (6651508).

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

6501632 is a wasteful number, since it uses less digits than its factorization.

6501632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 6501632 is about 2549.8297982414. The cubic root of 6501632 is about 186.6411756575.

Adding to 6501632 its reverse (2361056), we get a palindrome (8862688).

The spelling of 6501632 in words is "six million, five hundred one thousand, six hundred thirty-two".