65526240 has 96 divisors (see below), whose sum is σ = 222306336. Its totient is φ = 16128000.

The previous prime is 65526233. The next prime is 65526271. The reversal of 65526240 is 4262556.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 65526198 and 65526207.

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, 990 + ... + 11490.

It is an arithmetic number, because the mean of its divisors is an integer number (2315691).

Almost surely, 2^65526240 is an apocalyptic number.

65526240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65526240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111153168).

65526240 is an abundant number, since it is smaller than the sum of its proper divisors (156780096).

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

65526240 is a wasteful number, since it uses less digits than its factorization.

65526240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10532 (or 10524 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 65526240 is about 8094.8279784070. The cubic root of 65526240 is about 403.1547206019.

Adding to 65526240 its reverse (4262556), we get a palindrome (69788796).

The spelling of 65526240 in words is "sixty-five million, five hundred twenty-six thousand, two hundred forty".