64545441 has 16 divisors (see below), whose sum is σ = 89088000. Its totient is φ = 41524560.

The previous prime is 64545433. The next prime is 64545443. The reversal of 64545441 is 14454546.

64545441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64545441 - 2³ = 64545433 is a prime.

It is a super-2 number, since 2×64545441² = 8332227907768962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64545443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42310 + ... + 43808.

It is an arithmetic number, because the mean of its divisors is an integer number (5568000).

Almost surely, 2^64545441 is an apocalyptic number.

It is an amenable number.

64545441 is a deficient number, since it is larger than the sum of its proper divisors (24542559).

64545441 is a wasteful number, since it uses less digits than its factorization.

64545441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996.

The product of its digits is 38400, while the sum is 33.

The square root of 64545441 is about 8034.0177370977. The cubic root of 64545441 is about 401.1331224693.

Adding to 64545441 its reverse (14454546), we get a palindrome (78999987).

The spelling of 64545441 in words is "sixty-four million, five hundred forty-five thousand, four hundred forty-one".