64849169 has 32 divisors (see below), whose sum is σ = 86593536. Its totient is φ = 47013120.

The previous prime is 64849151. The next prime is 64849207. The reversal of 64849169 is 96194846.

It is a happy number.

64849169 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 64849169 - 2²⁰ = 63800593 is a prime.

It is a super-2 number, since 2×64849169² = 8410829439981122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64849139) 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 31 ways as a sum of consecutive naturals, for example, 139832 + ... + 140294.

It is an arithmetic number, because the mean of its divisors is an integer number (2706048).

Almost surely, 2^64849169 is an apocalyptic number.

It is an amenable number.

64849169 is a deficient number, since it is larger than the sum of its proper divisors (21744367).

64849169 is a wasteful number, since it uses less digits than its factorization.

64849169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its digits is 373248, while the sum is 47.

The square root of 64849169 is about 8052.8981739496. The cubic root of 64849169 is about 401.7613349476.

The spelling of 64849169 in words is "sixty-four million, eight hundred forty-nine thousand, one hundred sixty-nine".