65529813 has 4 divisors (see below), whose sum is σ = 87373088. Its totient is φ = 43686540.

The previous prime is 65529791. The next prime is 65529839. The reversal of 65529813 is 31892556.

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 65529813 - 2⁹ = 65529301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65529853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10921633 + ... + 10921638.

It is an arithmetic number, because the mean of its divisors is an integer number (21843272).

Almost surely, 2^65529813 is an apocalyptic number.

It is an amenable number.

65529813 is a deficient number, since it is larger than the sum of its proper divisors (21843275).

65529813 is a wasteful number, since it uses less digits than its factorization.

65529813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21843274.

The product of its digits is 64800, while the sum is 39.

The square root of 65529813 is about 8095.0486718734. The cubic root of 65529813 is about 403.1620481785.

The spelling of 65529813 in words is "sixty-five million, five hundred twenty-nine thousand, eight hundred thirteen".