64842543 has 12 divisors (see below), whose sum is σ = 97734000. Its totient is φ = 41348736.

The previous prime is 64842529. The next prime is 64842551. The reversal of 64842543 is 34524846.

64842543 is a `hidden beast` number, since 648 + 4 + 2 + 5 + 4 + 3 = 666.

It is not a de Polignac number, because 64842543 - 2¹² = 64838447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64842498 and 64842507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64842523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156418 + ... + 156831.

It is an arithmetic number, because the mean of its divisors is an integer number (8144500).

Almost surely, 2^64842543 is an apocalyptic number.

64842543 is a deficient number, since it is larger than the sum of its proper divisors (32891457).

64842543 is a wasteful number, since it uses less digits than its factorization.

64842543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313278 (or 313275 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 64842543 is about 8052.4867587597. The cubic root of 64842543 is about 401.7476510854.

The spelling of 64842543 in words is "sixty-four million, eight hundred forty-two thousand, five hundred forty-three".