64113649 has 2 divisors, whose sum is σ = 64113650. Its totient is φ = 64113648.

The previous prime is 64113641. The next prime is 64113659. The reversal of 64113649 is 94631146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 1600 = 8007^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 64113649 - 2³ = 64113641 is a prime.

It is a super-2 number, since 2×64113649² = 8221119976190402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64113641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32056824 + 32056825.

It is an arithmetic number, because the mean of its divisors is an integer number (32056825).

Almost surely, 2^64113649 is an apocalyptic number.

It is an amenable number.

64113649 is a deficient number, since it is larger than the sum of its proper divisors (1).

64113649 is an equidigital number, since it uses as much as digits as its factorization.

64113649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 64113649 is about 8007.0999119531. The cubic root of 64113649 is about 400.2366287395.

The spelling of 64113649 in words is "sixty-four million, one hundred thirteen thousand, six hundred forty-nine".