65528369 has 8 divisors (see below), whose sum is σ = 67455168. Its totient is φ = 63609840.

The previous prime is 65528347. The next prime is 65528381. The reversal of 65528369 is 96382556.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65528369 is a prime.

It is a super-2 number, since 2×65528369² = 8587934287600322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65528329) 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, 16364 + ... + 19970.

It is an arithmetic number, because the mean of its divisors is an integer number (8431896).

Almost surely, 2^65528369 is an apocalyptic number.

It is an amenable number.

65528369 is a deficient number, since it is larger than the sum of its proper divisors (1926799).

65528369 is a wasteful number, since it uses less digits than its factorization.

65528369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135.

The product of its digits is 388800, while the sum is 44.

The square root of 65528369 is about 8094.9594810598. The cubic root of 65528369 is about 403.1590868278.

The spelling of 65528369 in words is "sixty-five million, five hundred twenty-eight thousand, three hundred sixty-nine".