63666682 has 24 divisors (see below), whose sum is σ = 101841300. Its totient is φ = 29844288.

The previous prime is 63666679. The next prime is 63666697. The reversal of 63666682 is 28666636.

It can be written as a sum of positive squares in 2 ways, for example, as 57471561 + 6195121 = 7581^2 + 2489^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78294 + ... + 79102.

Almost surely, 2^63666682 is an apocalyptic number.

63666682 is a deficient number, since it is larger than the sum of its proper divisors (38174618).

63666682 is a wasteful number, since it uses less digits than its factorization.

63666682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 939 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 63666682 is about 7979.1404298959. The cubic root of 63666682 is about 399.3043784780.

The spelling of 63666682 in words is "sixty-three million, six hundred sixty-six thousand, six hundred eighty-two".