65145385 has 4 divisors (see below), whose sum is σ = 78174468. Its totient is φ = 52116304.

The previous prime is 65145359. The next prime is 65145461. The reversal of 65145385 is 58354156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41951529 + 23193856 = 6477^2 + 4816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65145385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6514534 + ... + 6514543.

It is an arithmetic number, because the mean of its divisors is an integer number (19543617).

Almost surely, 2^65145385 is an apocalyptic number.

It is an amenable number.

65145385 is a deficient number, since it is larger than the sum of its proper divisors (13029083).

65145385 is a wasteful number, since it uses less digits than its factorization.

65145385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13029082.

The product of its digits is 72000, while the sum is 37.

The square root of 65145385 is about 8071.2691071479. The cubic root of 65145385 is about 402.3721235170.

The spelling of 65145385 in words is "sixty-five million, one hundred forty-five thousand, three hundred eighty-five".