64554065 has 4 divisors (see below), whose sum is σ = 77464884. Its totient is φ = 51643248.

The previous prime is 64554047. The next prime is 64554067. The reversal of 64554065 is 56045546.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47348161 + 17205904 = 6881^2 + 4148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64554065 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64554067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455402 + ... + 6455411.

It is an arithmetic number, because the mean of its divisors is an integer number (19366221).

Almost surely, 2^64554065 is an apocalyptic number.

It is an amenable number.

64554065 is a deficient number, since it is larger than the sum of its proper divisors (12910819).

64554065 is a wasteful number, since it uses less digits than its factorization.

64554065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12910818.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 64554065 is about 8034.5544369305. The cubic root of 64554065 is about 401.1509869791.

The spelling of 64554065 in words is "sixty-four million, five hundred fifty-four thousand, sixty-five".