64836149 has 16 divisors (see below), whose sum is σ = 77647872. Its totient is φ = 52932528.

The previous prime is 64836139. The next prime is 64836157. The reversal of 64836149 is 94163846.

It is a cyclic number.

It is not a de Polignac number, because 64836149 - 2²⁰ = 63787573 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 (64836139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44852 + ... + 46274.

It is an arithmetic number, because the mean of its divisors is an integer number (4852992).

Almost surely, 2^64836149 is an apocalyptic number.

It is an amenable number.

64836149 is a deficient number, since it is larger than the sum of its proper divisors (12811723).

64836149 is a wasteful number, since it uses less digits than its factorization.

64836149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its digits is 124416, while the sum is 41.

The square root of 64836149 is about 8052.0897287599. The cubic root of 64836149 is about 401.7344454604.

The spelling of 64836149 in words is "sixty-four million, eight hundred thirty-six thousand, one hundred forty-nine".