65144360 has 32 divisors (see below), whose sum is σ = 147168360. Its totient is φ = 25952256.

The previous prime is 65144341. The next prime is 65144363. The reversal of 65144360 is 6344156.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 62315236 + 2829124 = 7894^2 + 1682^2 .

It is not an unprimeable number, because it can be changed into a prime (65144363) 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, 7112 + ... + 13448.

Almost surely, 2^65144360 is an apocalyptic number.

It is an amenable number.

65144360 is an abundant number, since it is smaller than the sum of its proper divisors (82024000).

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

65144360 is a wasteful number, since it uses less digits than its factorization.

65144360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605 (or 6601 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65144360 is about 8071.2056100684. The cubic root of 65144360 is about 402.3700131931.

The spelling of 65144360 in words is "sixty-five million, one hundred forty-four thousand, three hundred sixty".