65322240 has 72 divisors (see below), whose sum is σ = 208635168. Its totient is φ = 17418240.

The previous prime is 65322227. The next prime is 65322251. The reversal of 65322240 is 4222356.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 65322240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4666 + ... + 12345.

Almost surely, 2^65322240 is an apocalyptic number.

65322240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65322240 is an abundant number, since it is smaller than the sum of its proper divisors (143312928).

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

65322240 is a wasteful number, since it uses less digits than its factorization.

65322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17035 (or 17021 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 65322240 is about 8082.2175174886. The cubic root of 65322240 is about 402.7359109801.

Adding to 65322240 its reverse (4222356), we get a palindrome (69544596).

The spelling of 65322240 in words is "sixty-five million, three hundred twenty-two thousand, two hundred forty".