65997528 has 32 divisors (see below), whose sum is σ = 165412800. Its totient is φ = 21943328.

The previous prime is 65997523. The next prime is 65997551. The reversal of 65997528 is 82579956.

It is a happy number.

It is a super-2 number, since 2×65997528² = 8711347404221568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65997523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6775 + ... + 13337.

It is an arithmetic number, because the mean of its divisors is an integer number (5169150).

Almost surely, 2^65997528 is an apocalyptic number.

It is an amenable number.

65997528 is an abundant number, since it is smaller than the sum of its proper divisors (99415272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65997528 is a wasteful number, since it uses less digits than its factorization.

65997528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6987 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 51.

The square root of 65997528 is about 8123.8862621285. The cubic root of 65997528 is about 404.1189565723.

The spelling of 65997528 in words is "sixty-five million, nine hundred ninety-seven thousand, five hundred twenty-eight".