65217263 has 8 divisors (see below), whose sum is σ = 66285216. Its totient is φ = 64153600.

The previous prime is 65217239. The next prime is 65217277. The reversal of 65217263 is 36271256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65217263 - 2¹² = 65213167 is a prime.

It is a super-2 number, since 2×65217263² = 8506582786422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65217223) 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, 44795 + ... + 46227.

It is an arithmetic number, because the mean of its divisors is an integer number (8285652).

Almost surely, 2^65217263 is an apocalyptic number.

65217263 is a deficient number, since it is larger than the sum of its proper divisors (1067953).

65217263 is a wasteful number, since it uses less digits than its factorization.

65217263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its digits is 15120, while the sum is 32.

The square root of 65217263 is about 8075.7205870436. The cubic root of 65217263 is about 402.5200545542.

The spelling of 65217263 in words is "sixty-five million, two hundred seventeen thousand, two hundred sixty-three".