65144368 has 30 divisors (see below), whose sum is σ = 128270436. Its totient is φ = 32050656.

The previous prime is 65144363. The next prime is 65144399. The reversal of 65144368 is 86344156.

It is a happy number.

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 5 ways as a sum of consecutive naturals, for example, 71371 + ... + 72277.

Almost surely, 2^65144368 is an apocalyptic number.

It is an amenable number.

65144368 is a deficient number, since it is larger than the sum of its proper divisors (63126068).

65144368 is an equidigital number, since it uses as much as digits as its factorization.

65144368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049 (or 976 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 65144368 is about 8071.2061056573. The cubic root of 65144368 is about 402.3700296640.

It can be divided in two parts, 651443 and 68, that added together give a triangular number (651511 = T₁₁₄₁).

The spelling of 65144368 in words is "sixty-five million, one hundred forty-four thousand, three hundred sixty-eight".