65256717 has 4 divisors (see below), whose sum is σ = 87008960. Its totient is φ = 43504476.

The previous prime is 65256703. The next prime is 65256743. The reversal of 65256717 is 71765256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65256717 - 2⁴ = 65256701 is a prime.

It is a super-2 number, since 2×65256717² = 8516878227236178, 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 (65256797) 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, 10876117 + ... + 10876122.

It is an arithmetic number, because the mean of its divisors is an integer number (21752240).

Almost surely, 2^65256717 is an apocalyptic number.

It is an amenable number.

65256717 is a deficient number, since it is larger than the sum of its proper divisors (21752243).

65256717 is a wasteful number, since it uses less digits than its factorization.

65256717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21752242.

The product of its digits is 88200, while the sum is 39.

The square root of 65256717 is about 8078.1629718643. The cubic root of 65256717 is about 402.6012080408.

The spelling of 65256717 in words is "sixty-five million, two hundred fifty-six thousand, seven hundred seventeen".