64386049 has 24 divisors (see below), whose sum is σ = 82031208. Its totient is φ = 50077440.

The previous prime is 64386013. The next prime is 64386067. The reversal of 64386049 is 94068346.

It can be written as a sum of positive squares in 4 ways, for example, as 2480625 + 61905424 = 1575^2 + 7868^2 .

It is a de Polignac number, because none of the positive numbers 2^k-64386049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64336049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38029 + ... + 39685.

It is an arithmetic number, because the mean of its divisors is an integer number (3417967).

Almost surely, 2^64386049 is an apocalyptic number.

It is an amenable number.

64386049 is a deficient number, since it is larger than the sum of its proper divisors (17645159).

64386049 is a wasteful number, since it uses less digits than its factorization.

64386049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 64386049 is about 8024.0917866136. The cubic root of 64386049 is about 400.8026570269.

The spelling of 64386049 in words is "sixty-four million, three hundred eighty-six thousand, forty-nine".