65400533 has 8 divisors (see below), whose sum is σ = 71512416. Its totient is φ = 59316400.

The previous prime is 65400529. The next prime is 65400541. The reversal of 65400533 is 33500456.

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

It is not a de Polignac number, because 65400533 - 2² = 65400529 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 (65400553) 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, 1838 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (8939052).

Almost surely, 2^65400533 is an apocalyptic number.

It is an amenable number.

65400533 is a deficient number, since it is larger than the sum of its proper divisors (6111883).

65400533 is a wasteful number, since it uses less digits than its factorization.

65400533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13875.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 65400533 is about 8087.0596016105. The cubic root of 65400533 is about 402.8967485630.

Adding to 65400533 its reverse (33500456), we get a palindrome (98900989).

The spelling of 65400533 in words is "sixty-five million, four hundred thousand, five hundred thirty-three".