64320205 has 16 divisors (see below), whose sum is σ = 79294464. Its totient is φ = 50062720.

The previous prime is 64320203. The next prime is 64320209. The reversal of 64320205 is 50202346.

It is a happy number.

It is not a de Polignac number, because 64320205 - 2¹ = 64320203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64320203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44169 + ... + 45601.

It is an arithmetic number, because the mean of its divisors is an integer number (4955904).

Almost surely, 2^64320205 is an apocalyptic number.

It is an amenable number.

64320205 is a deficient number, since it is larger than the sum of its proper divisors (14974259).

64320205 is a wasteful number, since it uses less digits than its factorization.

64320205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 64320205 is about 8019.9878428836. The cubic root of 64320205 is about 400.6659842969.

The spelling of 64320205 in words is "sixty-four million, three hundred twenty thousand, two hundred five".