64712443 has 4 divisors (see below), whose sum is σ = 64733968. Its totient is φ = 64690920.

The previous prime is 64712441. The next prime is 64712447. The reversal of 64712443 is 34421746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34421746 = 2 ⋅17210873.

It is a cyclic number.

It is not a de Polignac number, because 64712443 - 2¹ = 64712441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64712441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5343 + ... + 12568.

It is an arithmetic number, because the mean of its divisors is an integer number (16183492).

Almost surely, 2^64712443 is an apocalyptic number.

64712443 is a deficient number, since it is larger than the sum of its proper divisors (21525).

64712443 is a wasteful number, since it uses less digits than its factorization.

64712443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21524.

The product of its digits is 16128, while the sum is 31.

The square root of 64712443 is about 8044.4044527858. The cubic root of 64712443 is about 401.4787825186.

The spelling of 64712443 in words is "sixty-four million, seven hundred twelve thousand, four hundred forty-three".