64654913 has 4 divisors (see below), whose sum is σ = 64689348. Its totient is φ = 64620480.

The previous prime is 64654907. The next prime is 64654921. The reversal of 64654913 is 31945646.

64654913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55606849 + 9048064 = 7457^2 + 3008^2 .

It is a cyclic number.

It is not a de Polignac number, because 64654913 - 2⁴ = 64654897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64654903) 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 3 ways as a sum of consecutive naturals, for example, 14228 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (16172337).

Almost surely, 2^64654913 is an apocalyptic number.

It is an amenable number.

64654913 is a deficient number, since it is larger than the sum of its proper divisors (34435).

64654913 is a wasteful number, since it uses less digits than its factorization.

64654913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34434.

The product of its digits is 77760, while the sum is 38.

The square root of 64654913 is about 8040.8278802621. The cubic root of 64654913 is about 401.3597743795.

The spelling of 64654913 in words is "sixty-four million, six hundred fifty-four thousand, nine hundred thirteen".