65352540 has 96 divisors (see below), whose sum is σ = 202196736. Its totient is φ = 15639040.

The previous prime is 65352527. The next prime is 65352541. The reversal of 65352540 is 4525356.

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 = 65352498 and 65352507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65352541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54184 + ... + 55376.

It is an arithmetic number, because the mean of its divisors is an integer number (2106216).

Almost surely, 2^65352540 is an apocalyptic number.

65352540 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 65352540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101098368).

65352540 is an abundant number, since it is smaller than the sum of its proper divisors (136844196).

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

65352540 is a wasteful number, since it uses less digits than its factorization.

65352540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 65352540 is about 8084.0917857234. The cubic root of 65352540 is about 402.7981716119.

Adding to 65352540 its reverse (4525356), we get a palindrome (69877896).

The spelling of 65352540 in words is "sixty-five million, three hundred fifty-two thousand, five hundred forty".