64242805 has 16 divisors (see below), whose sum is σ = 84265344. Its totient is φ = 46630080.

The previous prime is 64242803. The next prime is 64242811. The reversal of 64242805 is 50824246.

64242805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64242805 - 2¹ = 64242803 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 (64242803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40864 + ... + 42406.

It is an arithmetic number, because the mean of its divisors is an integer number (5266584).

Almost surely, 2^64242805 is an apocalyptic number.

It is an amenable number.

64242805 is a deficient number, since it is larger than the sum of its proper divisors (20022539).

64242805 is a wasteful number, since it uses less digits than its factorization.

64242805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 64242805 is about 8015.1609466061. The cubic root of 64242805 is about 400.5052054001.

It can be divided in two parts, 6424 and 2805, that added together give a palindrome (9229).

The spelling of 64242805 in words is "sixty-four million, two hundred forty-two thousand, eight hundred five".