63389666 has 16 divisors (see below), whose sum is σ = 96190200. Its totient is φ = 31328640.

The previous prime is 63389663. The next prime is 63389701. The reversal of 63389666 is 66698336.

It can be written as a sum of positive squares in 4 ways, for example, as 50822641 + 12567025 = 7129^2 + 3545^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63389666.

It is not an unprimeable number, because it can be changed into a prime (63389663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83360 + ... + 84116.

Almost surely, 2^63389666 is an apocalyptic number.

63389666 is a deficient number, since it is larger than the sum of its proper divisors (32800534).

63389666 is a wasteful number, since it uses less digits than its factorization.

63389666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189.

The product of its digits is 839808, while the sum is 47.

The square root of 63389666 is about 7961.7627445183. The cubic root of 63389666 is about 398.7244073157.

The spelling of 63389666 in words is "sixty-three million, three hundred eighty-nine thousand, six hundred sixty-six".