65020517 has 4 divisors (see below), whose sum is σ = 67847520. Its totient is φ = 62193516.

The previous prime is 65020511. The next prime is 65020519. The reversal of 65020517 is 71502056.

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 a cyclic number.

It is not a de Polignac number, because 65020517 - 2¹⁴ = 65004133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65020511) by changing a digit.

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, 1413467 + ... + 1413512.

It is an arithmetic number, because the mean of its divisors is an integer number (16961880).

Almost surely, 2^65020517 is an apocalyptic number.

It is an amenable number.

65020517 is a deficient number, since it is larger than the sum of its proper divisors (2827003).

65020517 is a wasteful number, since it uses less digits than its factorization.

65020517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827002.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 65020517 is about 8063.5300582313. The cubic root of 65020517 is about 402.1148756293.

The spelling of 65020517 in words is "sixty-five million, twenty thousand, five hundred seventeen".