65218063 has 4 divisors (see below), whose sum is σ = 65795328. Its totient is φ = 64640800.

The previous prime is 65218039. The next prime is 65218073. The reversal of 65218063 is 36081256.

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 65218063 - 2¹³ = 65209871 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65218033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288463 + ... + 288688.

It is an arithmetic number, because the mean of its divisors is an integer number (16448832).

Almost surely, 2^65218063 is an apocalyptic number.

65218063 is a deficient number, since it is larger than the sum of its proper divisors (577265).

65218063 is a wasteful number, since it uses less digits than its factorization.

65218063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577264.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 65218063 is about 8075.7701180754. The cubic root of 65218063 is about 402.5217004105.

The spelling of 65218063 in words is "sixty-five million, two hundred eighteen thousand, sixty-three".