64562543 has 4 divisors (see below), whose sum is σ = 64757928. Its totient is φ = 64367160.

The previous prime is 64562539. The next prime is 64562569. The reversal of 64562543 is 34526546.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64562543 - 2² = 64562539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64562503) 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, 97196 + ... + 97857.

It is an arithmetic number, because the mean of its divisors is an integer number (16189482).

Almost surely, 2^64562543 is an apocalyptic number.

64562543 is a deficient number, since it is larger than the sum of its proper divisors (195385).

64562543 is a wasteful number, since it uses less digits than its factorization.

64562543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195384.

The product of its digits is 86400, while the sum is 35.

The square root of 64562543 is about 8035.0820157606. The cubic root of 64562543 is about 401.1685475009.

The spelling of 64562543 in words is "sixty-four million, five hundred sixty-two thousand, five hundred forty-three".