65240740 has 24 divisors (see below), whose sum is σ = 141426432. Its totient is φ = 25254240.

The previous prime is 65240723. The next prime is 65240741. The reversal of 65240740 is 4704256.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65240699 and 65240708.

It is not an unprimeable number, because it can be changed into a prime (65240741) 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, 51994 + ... + 53233.

It is an arithmetic number, because the mean of its divisors is an integer number (5892768).

Almost surely, 2^65240740 is an apocalyptic number.

It is an amenable number.

65240740 is an abundant number, since it is smaller than the sum of its proper divisors (76185692).

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

65240740 is a wasteful number, since it uses less digits than its factorization.

65240740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105267 (or 105265 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 65240740 is about 8077.1740107540. The cubic root of 65240740 is about 402.5683486672.

Adding to 65240740 its reverse (4704256), we get a palindrome (69944996).

The spelling of 65240740 in words is "sixty-five million, two hundred forty thousand, seven hundred forty".