64909336 has 16 divisors (see below), whose sum is σ = 123420240. Its totient is φ = 31997280.

The previous prime is 64909331. The next prime is 64909387. The reversal of 64909336 is 63390946.

64909336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64909331) 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 3 ways as a sum of consecutive naturals, for example, 56571 + ... + 57706.

It is an arithmetic number, because the mean of its divisors is an integer number (7713765).

Almost surely, 2^64909336 is an apocalyptic number.

It is an amenable number.

64909336 is a deficient number, since it is larger than the sum of its proper divisors (58510904).

64909336 is a wasteful number, since it uses less digits than its factorization.

64909336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114354 (or 114350 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 64909336 is about 8056.6330436479. The cubic root of 64909336 is about 401.8855478077.

The spelling of 64909336 in words is "sixty-four million, nine hundred nine thousand, three hundred thirty-six".