64533009 has 8 divisors (see below), whose sum is σ = 89785152. Its totient is φ = 41151440.

The previous prime is 64532999. The next prime is 64533011. The reversal of 64533009 is 90033546.

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 not a de Polignac number, because 64533009 - 2⁵ = 64532977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64533109) 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, 467562 + ... + 467699.

It is an arithmetic number, because the mean of its divisors is an integer number (11223144).

Almost surely, 2^64533009 is an apocalyptic number.

64533009 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64533009 is a deficient number, since it is larger than the sum of its proper divisors (25252143).

64533009 is a wasteful number, since it uses less digits than its factorization.

64533009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935287.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 64533009 is about 8033.2439898213. The cubic root of 64533009 is about 401.1073669338.

The spelling of 64533009 in words is "sixty-four million, five hundred thirty-three thousand, nine".