65853513 has 16 divisors (see below), whose sum is σ = 106430400. Its totient is φ = 39911040.

The previous prime is 65853497. The next prime is 65853521. The reversal of 65853513 is 31535856.

65853513 is a `hidden beast` number, since 65 + 85 + 3 + 513 = 666.

It is not a de Polignac number, because 65853513 - 2⁴ = 65853497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65853013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110568 + ... + 111161.

It is an arithmetic number, because the mean of its divisors is an integer number (6651900).

Almost surely, 2^65853513 is an apocalyptic number.

It is an amenable number.

65853513 is a deficient number, since it is larger than the sum of its proper divisors (40576887).

65853513 is a wasteful number, since it uses less digits than its factorization.

65853513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221749 (or 221743 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 65853513 is about 8115.0177448974. The cubic root of 65853513 is about 403.8247961829.

It can be divided in two parts, 65853 and 513, that added together give a palindrome (66366).

The spelling of 65853513 in words is "sixty-five million, eight hundred fifty-three thousand, five hundred thirteen".