64743545 has 12 divisors (see below), whose sum is σ = 81998820. Its totient is φ = 49067424.

The previous prime is 64743529. The next prime is 64743557. The reversal of 64743545 is 54534746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42719296 + 22024249 = 6536^2 + 4693^2 .

It is not a de Polignac number, because 64743545 - 2⁴ = 64743529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64743499 and 64743508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16130 + ... + 19739.

It is an arithmetic number, because the mean of its divisors is an integer number (6833235).

Almost surely, 2^64743545 is an apocalyptic number.

It is an amenable number.

64743545 is a deficient number, since it is larger than the sum of its proper divisors (17255275).

64743545 is a wasteful number, since it uses less digits than its factorization.

64743545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35912 (or 35893 counting only the distinct ones).

The product of its digits is 201600, while the sum is 38.

The square root of 64743545 is about 8046.3373655347. The cubic root of 64743545 is about 401.5430915993.

The spelling of 64743545 in words is "sixty-four million, seven hundred forty-three thousand, five hundred forty-five".