65253613 has 4 divisors (see below), whose sum is σ = 65852380. Its totient is φ = 64654848.

The previous prime is 65253611. The next prime is 65253677. The reversal of 65253613 is 31635256.

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 36929929 + 28323684 = 6077^2 + 5322^2 .

It is a cyclic number.

It is not a de Polignac number, because 65253613 - 2¹ = 65253611 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 (65253611) 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, 299220 + ... + 299437.

It is an arithmetic number, because the mean of its divisors is an integer number (16463095).

Almost surely, 2^65253613 is an apocalyptic number.

It is an amenable number.

65253613 is a deficient number, since it is larger than the sum of its proper divisors (598767).

65253613 is a wasteful number, since it uses less digits than its factorization.

65253613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598766.

The product of its digits is 16200, while the sum is 31.

The square root of 65253613 is about 8077.9708466916. The cubic root of 65253613 is about 402.5948245652.

Adding to 65253613 its reverse (31635256), we get a palindrome (96888869).

The spelling of 65253613 in words is "sixty-five million, two hundred fifty-three thousand, six hundred thirteen".