64466789 has 2 divisors, whose sum is σ = 64466790. Its totient is φ = 64466788.

The previous prime is 64466747. The next prime is 64466807. The reversal of 64466789 is 98766446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42797764 + 21669025 = 6542^2 + 4655^2 .

It is a cyclic number.

It is not a de Polignac number, because 64466789 - 2¹² = 64462693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64466729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32233394 + 32233395.

It is an arithmetic number, because the mean of its divisors is an integer number (32233395).

Almost surely, 2^64466789 is an apocalyptic number.

It is an amenable number.

64466789 is a deficient number, since it is larger than the sum of its proper divisors (1).

64466789 is an equidigital number, since it uses as much as digits as its factorization.

64466789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 64466789 is about 8029.1213093339. The cubic root of 64466789 is about 400.9701223378.

The spelling of 64466789 in words is "sixty-four million, four hundred sixty-six thousand, seven hundred eighty-nine".