65440333 has 12 divisors (see below), whose sum is σ = 76315932. Its totient is φ = 55950720.

The previous prime is 65440321. The next prime is 65440337. The reversal of 65440333 is 33304456.

It can be written as a sum of positive squares in 2 ways, for example, as 13557124 + 51883209 = 3682^2 + 7203^2 .

It is not a de Polignac number, because 65440333 - 2⁵ = 65440301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65440337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21141 + ... + 24037.

It is an arithmetic number, because the mean of its divisors is an integer number (6359661).

Almost surely, 2^65440333 is an apocalyptic number.

It is an amenable number.

65440333 is a deficient number, since it is larger than the sum of its proper divisors (10875599).

65440333 is a wasteful number, since it uses less digits than its factorization.

65440333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 65440333 is about 8089.5199486743. The cubic root of 65440333 is about 402.9784606335.

Adding to 65440333 its reverse (33304456), we get a palindrome (98744789).

The spelling of 65440333 in words is "sixty-five million, four hundred forty thousand, three hundred thirty-three".