64465405 has 8 divisors (see below), whose sum is σ = 80026200. Its totient is φ = 49793856.

The previous prime is 64465403. The next prime is 64465409. The reversal of 64465405 is 50456446.

It can be written as a sum of positive squares in 4 ways, for example, as 1390041 + 63075364 = 1179^2 + 7942^2 .

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 64465405 - 2¹ = 64465403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64465403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222150 + ... + 222439.

It is an arithmetic number, because the mean of its divisors is an integer number (10003275).

Almost surely, 2^64465405 is an apocalyptic number.

It is an amenable number.

64465405 is a deficient number, since it is larger than the sum of its proper divisors (15560795).

64465405 is a wasteful number, since it uses less digits than its factorization.

64465405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444623.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 64465405 is about 8029.0351226035. The cubic root of 64465405 is about 400.9672529192.

It can be divided in two parts, 644 and 65405, that added together give a square (66049 = 257²).

The spelling of 64465405 in words is "sixty-four million, four hundred sixty-five thousand, four hundred five".