63666532 has 12 divisors (see below), whose sum is σ = 112565740. Its totient is φ = 31504896.

The previous prime is 63666523. The next prime is 63666539. The reversal of 63666532 is 23566636.

It can be written as a sum of positive squares in 2 ways, for example, as 52215076 + 11451456 = 7226^2 + 3384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63666491 and 63666500.

It is not an unprimeable number, because it can be changed into a prime (63666539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81657 + ... + 82432.

Almost surely, 2^63666532 is an apocalyptic number.

It is an amenable number.

63666532 is a deficient number, since it is larger than the sum of its proper divisors (48899208).

63666532 is a wasteful number, since it uses less digits than its factorization.

63666532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164190 (or 164188 counting only the distinct ones).

The product of its digits is 116640, while the sum is 37.

The square root of 63666532 is about 7979.1310303817. The cubic root of 63666532 is about 399.3040648880.

The spelling of 63666532 in words is "sixty-three million, six hundred sixty-six thousand, five hundred thirty-two".