64011243 has 4 divisors (see below), whose sum is σ = 85348328. Its totient is φ = 42674160.

The previous prime is 64011217. The next prime is 64011271. The reversal of 64011243 is 34211046.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64011243 - 2⁸ = 64010987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64011043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668538 + ... + 10668543.

It is an arithmetic number, because the mean of its divisors is an integer number (21337082).

Almost surely, 2^64011243 is an apocalyptic number.

64011243 is a deficient number, since it is larger than the sum of its proper divisors (21337085).

64011243 is a wasteful number, since it uses less digits than its factorization.

64011243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337084.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 64011243 is about 8000.7026566421. The cubic root of 64011243 is about 400.0234215452.

Adding to 64011243 its reverse (34211046), we get a palindrome (98222289).

The spelling of 64011243 in words is "sixty-four million, eleven thousand, two hundred forty-three".