65144315 has 4 divisors (see below), whose sum is σ = 78173184. Its totient is φ = 52115448.

The previous prime is 65144291. The next prime is 65144329. The reversal of 65144315 is 51344156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65144315 - 2⁸ = 65144059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6514427 + ... + 6514436.

It is an arithmetic number, because the mean of its divisors is an integer number (19543296).

Almost surely, 2^65144315 is an apocalyptic number.

65144315 is a deficient number, since it is larger than the sum of its proper divisors (13028869).

65144315 is a wasteful number, since it uses less digits than its factorization.

65144315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13028868.

The product of its digits is 7200, while the sum is 29.

The square root of 65144315 is about 8071.2028223803. The cubic root of 65144315 is about 402.3699205442.

The spelling of 65144315 in words is "sixty-five million, one hundred forty-four thousand, three hundred fifteen".