64136469 has 8 divisors (see below), whose sum is σ = 85561120. Its totient is φ = 42734736.

The previous prime is 64136467. The next prime is 64136473. The reversal of 64136469 is 96463146.

64136469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64136469 - 2¹ = 64136467 is a prime.

It is a super-2 number, since 2×64136469² = 8226973311575922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64136467) 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 7 ways as a sum of consecutive naturals, for example, 2487 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (10695140).

Almost surely, 2^64136469 is an apocalyptic number.

It is an amenable number.

64136469 is a deficient number, since it is larger than the sum of its proper divisors (21424651).

64136469 is a wasteful number, since it uses less digits than its factorization.

64136469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11459.

The product of its digits is 93312, while the sum is 39.

The square root of 64136469 is about 8008.5247705180. The cubic root of 64136469 is about 400.2841085747.

The spelling of 64136469 in words is "sixty-four million, one hundred thirty-six thousand, four hundred sixty-nine".