64489843 has 8 divisors (see below), whose sum is σ = 72068976. Its totient is φ = 57196800.

The previous prime is 64489811. The next prime is 64489849. The reversal of 64489843 is 34898446.

It is a happy number.

64489843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64489843 - 2⁵ = 64489811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64489793 and 64489802.

It is not an unprimeable number, because it can be changed into a prime (64489849) 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 7 ways as a sum of consecutive naturals, for example, 71046 + ... + 71947.

It is an arithmetic number, because the mean of its divisors is an integer number (9008622).

Almost surely, 2^64489843 is an apocalyptic number.

64489843 is a deficient number, since it is larger than the sum of its proper divisors (7579133).

64489843 is a wasteful number, since it uses less digits than its factorization.

64489843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143045.

The product of its digits is 663552, while the sum is 46.

The square root of 64489843 is about 8030.5568300087. The cubic root of 64489843 is about 401.0179136820.

The spelling of 64489843 in words is "sixty-four million, four hundred eighty-nine thousand, eight hundred forty-three".