64205413 has 4 divisors (see below), whose sum is σ = 67982220. Its totient is φ = 60428608.

The previous prime is 64205411. The next prime is 64205423. The reversal of 64205413 is 31450246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18818244 + 45387169 = 4338^2 + 6737^2 .

It is not a de Polignac number, because 64205413 - 2¹ = 64205411 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 (64205411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888378 + ... + 1888411.

It is an arithmetic number, because the mean of its divisors is an integer number (16995555).

Almost surely, 2^64205413 is an apocalyptic number.

It is an amenable number.

64205413 is a deficient number, since it is larger than the sum of its proper divisors (3776807).

64205413 is a wasteful number, since it uses less digits than its factorization.

64205413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776806.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 64205413 is about 8012.8280276067. The cubic root of 64205413 is about 400.4274867250.

Adding to 64205413 its reverse (31450246), we get a palindrome (95655659).

The spelling of 64205413 in words is "sixty-four million, two hundred five thousand, four hundred thirteen".