65440760 has 64 divisors (see below), whose sum is σ = 183582720. Its totient is φ = 20396160.

The previous prime is 65440757. The next prime is 65440763. The reversal of 65440760 is 6704456.

It is an interprime number because it is at equal distance from previous prime (65440757) and next prime (65440763).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7544 + ... + 13703.

It is an arithmetic number, because the mean of its divisors is an integer number (2868480).

Almost surely, 2^65440760 is an apocalyptic number.

It is an amenable number.

65440760 is an abundant number, since it is smaller than the sum of its proper divisors (118141960).

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

65440760 is a wasteful number, since it uses less digits than its factorization.

65440760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21276 (or 21272 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 65440760 is about 8089.5463408030. The cubic root of 65440760 is about 402.9793371135.

It can be divided in two parts, 654 and 40760, that added together give a palindrome (41414).

The spelling of 65440760 in words is "sixty-five million, four hundred forty thousand, seven hundred sixty".