65543504 has 40 divisors (see below), whose sum is σ = 137803680. Its totient is φ = 30019968.

The previous prime is 65543501. The next prime is 65543507. The reversal of 65543504 is 40534556.

It is an interprime number because it is at equal distance from previous prime (65543501) and next prime (65543507).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65543501) 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, 27779 + ... + 30045.

It is an arithmetic number, because the mean of its divisors is an integer number (3445092).

Almost surely, 2^65543504 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 65543504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68901840).

65543504 is an abundant number, since it is smaller than the sum of its proper divisors (72260176).

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

65543504 is a wasteful number, since it uses less digits than its factorization.

65543504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 65543504 is about 8095.8942680843. The cubic root of 65543504 is about 403.1901234773.

The spelling of 65543504 in words is "sixty-five million, five hundred forty-three thousand, five hundred four".