64788543 has 12 divisors (see below), whose sum is σ = 96602688. Its totient is φ = 41798880.

The previous prime is 64788511. The next prime is 64788553. The reversal of 64788543 is 34588746.

It is not a de Polignac number, because 64788543 - 2⁵ = 64788511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64788553) 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, 115830 + ... + 116387.

It is an arithmetic number, because the mean of its divisors is an integer number (8050224).

Almost surely, 2^64788543 is an apocalyptic number.

64788543 is a deficient number, since it is larger than the sum of its proper divisors (31814145).

64788543 is a wasteful number, since it uses less digits than its factorization.

64788543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232254 (or 232251 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 64788543 is about 8049.1330589076. The cubic root of 64788543 is about 401.6360967611.

The spelling of 64788543 in words is "sixty-four million, seven hundred eighty-eight thousand, five hundred forty-three".