63966648 has 32 divisors (see below), whose sum is σ = 169324560. Its totient is φ = 20067840.

The previous prime is 63966647. The next prime is 63966649. The reversal of 63966648 is 84666936.

It is an interprime number because it is at equal distance from previous prime (63966647) and next prime (63966649).

It is a junction number, because it is equal to n+sod(n) for n = 63966597 and 63966606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63966641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77983 + ... + 78798.

Almost surely, 2^63966648 is an apocalyptic number.

63966648 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

63966648 is an abundant number, since it is smaller than the sum of its proper divisors (105357912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63966648 is a wasteful number, since it uses less digits than its factorization.

63966648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156807 (or 156803 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The square root of 63966648 is about 7997.9152283580. The cubic root of 63966648 is about 399.9305045933.

The spelling of 63966648 in words is "sixty-three million, nine hundred sixty-six thousand, six hundred forty-eight".