64415533 has 24 divisors (see below), whose sum is σ = 84431808. Its totient is φ = 47953152.

The previous prime is 64415509. The next prime is 64415623. The reversal of 64415533 is 33551446.

It is not a de Polignac number, because 64415533 - 2⁵ = 64415501 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64415495 and 64415504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64415503) 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 23 ways as a sum of consecutive naturals, for example, 18510 + ... + 21712.

It is an arithmetic number, because the mean of its divisors is an integer number (3517992).

Almost surely, 2^64415533 is an apocalyptic number.

It is an amenable number.

64415533 is a deficient number, since it is larger than the sum of its proper divisors (20016275).

64415533 is a wasteful number, since it uses less digits than its factorization.

64415533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3240 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 64415533 is about 8025.9287936039. The cubic root of 64415533 is about 400.8638269148.

Adding to 64415533 its reverse (33551446), we get a palindrome (97966979).

The spelling of 64415533 in words is "sixty-four million, four hundred fifteen thousand, five hundred thirty-three".