65632573 has 4 divisors (see below), whose sum is σ = 65655648. Its totient is φ = 65609500.

The previous prime is 65632571. The next prime is 65632583. The reversal of 65632573 is 37523656.

It is a happy number.

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 65632573 - 2¹ = 65632571 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 (65632571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6553 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (16413912).

Almost surely, 2^65632573 is an apocalyptic number.

It is an amenable number.

65632573 is a deficient number, since it is larger than the sum of its proper divisors (23075).

65632573 is a wasteful number, since it uses less digits than its factorization.

65632573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23074.

The product of its digits is 113400, while the sum is 37.

The square root of 65632573 is about 8101.3932752336. The cubic root of 65632573 is about 403.3726764587.

The spelling of 65632573 in words is "sixty-five million, six hundred thirty-two thousand, five hundred seventy-three".