64652566 has 8 divisors (see below), whose sum is σ = 105795144. Its totient is φ = 29387520.

The previous prime is 64652557. The next prime is 64652593. The reversal of 64652566 is 66525646.

64652566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1469355 + ... + 1469398.

It is an arithmetic number, because the mean of its divisors is an integer number (13224393).

Almost surely, 2^64652566 is an apocalyptic number.

64652566 is a deficient number, since it is larger than the sum of its proper divisors (41142578).

64652566 is a wasteful number, since it uses less digits than its factorization.

64652566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938766.

The product of its digits is 259200, while the sum is 40.

The square root of 64652566 is about 8040.6819362539. The cubic root of 64652566 is about 401.3549178123.

Subtracting 64652566 from its reverse (66525646), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 64652566 in words is "sixty-four million, six hundred fifty-two thousand, five hundred sixty-six".