65250613 has 4 divisors (see below), whose sum is σ = 65666380. Its totient is φ = 64834848.

The previous prime is 65250593. The next prime is 65250623. The reversal of 65250613 is 31605256.

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 17114769 + 48135844 = 4137^2 + 6938^2 .

It is a cyclic number.

It is not a de Polignac number, because 65250613 - 2¹⁷ = 65119541 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 (65250623) 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, 207648 + ... + 207961.

It is an arithmetic number, because the mean of its divisors is an integer number (16416595).

Almost surely, 2^65250613 is an apocalyptic number.

It is an amenable number.

65250613 is a deficient number, since it is larger than the sum of its proper divisors (415767).

65250613 is a wasteful number, since it uses less digits than its factorization.

65250613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415766.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 65250613 is about 8077.7851543601. The cubic root of 65250613 is about 402.5886547767.

Adding to 65250613 its reverse (31605256), we get a palindrome (96855869).

The spelling of 65250613 in words is "sixty-five million, two hundred fifty thousand, six hundred thirteen".