64680559 has 2 divisors, whose sum is σ = 64680560. Its totient is φ = 64680558.

The previous prime is 64680533. The next prime is 64680589. The reversal of 64680559 is 95508646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64680559 - 2¹³ = 64672367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64680589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32340279 + 32340280.

It is an arithmetic number, because the mean of its divisors is an integer number (32340280).

Almost surely, 2^64680559 is an apocalyptic number.

64680559 is a deficient number, since it is larger than the sum of its proper divisors (1).

64680559 is an equidigital number, since it uses as much as digits as its factorization.

64680559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 64680559 is about 8042.4224584388. The cubic root of 64680559 is about 401.4128351170.

The spelling of 64680559 in words is "sixty-four million, six hundred eighty thousand, five hundred fifty-nine".