65350240 has 48 divisors (see below), whose sum is σ = 155076768. Its totient is φ = 26023936.

The previous prime is 65350237. The next prime is 65350249. The reversal of 65350240 is 4205356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65350249) 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, 41304 + ... + 42856.

It is an arithmetic number, because the mean of its divisors is an integer number (3230766).

Almost surely, 2^65350240 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 65350240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77538384).

65350240 is an abundant number, since it is smaller than the sum of its proper divisors (89726528).

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

65350240 is a wasteful number, since it uses less digits than its factorization.

65350240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 65350240 is about 8083.9495297781. The cubic root of 65350240 is about 402.7934462324.

Adding to 65350240 its reverse (4205356), we get a palindrome (69555596).

The spelling of 65350240 in words is "sixty-five million, three hundred fifty thousand, two hundred forty".