64063666 has 16 divisors (see below), whose sum is σ = 97314840. Its totient is φ = 31628160.

The previous prime is 64063651. The next prime is 64063691. The reversal of 64063666 is 66636046.

It can be written as a sum of positive squares in 4 ways, for example, as 63920025 + 143641 = 7995^2 + 379^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62236 + ... + 63256.

Almost surely, 2^64063666 is an apocalyptic number.

64063666 is a deficient number, since it is larger than the sum of its proper divisors (33251174).

64063666 is a wasteful number, since it uses less digits than its factorization.

64063666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 64063666 is about 8003.9781359022. The cubic root of 64063666 is about 400.1325935425.

The spelling of 64063666 in words is "sixty-four million, sixty-three thousand, six hundred sixty-six".