63685930 has 96 divisors (see below), whose sum is σ = 147393792. Its totient is φ = 19388160.

The previous prime is 63685907. The next prime is 63685931. The reversal of 63685930 is 3958636.

It is not an unprimeable number, because it can be changed into a prime (63685931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 618259 + ... + 618361.

It is an arithmetic number, because the mean of its divisors is an integer number (1535352).

Almost surely, 2^63685930 is an apocalyptic number.

63685930 is an abundant number, since it is smaller than the sum of its proper divisors (83707862).

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

63685930 is a wasteful number, since it uses less digits than its factorization.

63685930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 63685930 is about 7980.3464837061. The cubic root of 63685930 is about 399.3446142603.

The spelling of 63685930 in words is "sixty-three million, six hundred eighty-five thousand, nine hundred thirty".