64320933 has 8 divisors (see below), whose sum is σ = 86794848. Its totient is φ = 42363824.

The previous prime is 64320889. The next prime is 64320937. The reversal of 64320933 is 33902346.

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 64320933 - 2¹⁷ = 64189861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64320933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64320937) 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, 128910 + ... + 129407.

It is an arithmetic number, because the mean of its divisors is an integer number (10849356).

Almost surely, 2^64320933 is an apocalyptic number.

It is an amenable number.

64320933 is a deficient number, since it is larger than the sum of its proper divisors (22473915).

64320933 is a wasteful number, since it uses less digits than its factorization.

64320933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258403.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 64320933 is about 8020.0332293576. The cubic root of 64320933 is about 400.6674959201.

The spelling of 64320933 in words is "sixty-four million, three hundred twenty thousand, nine hundred thirty-three".