63642006 has 24 divisors (see below), whose sum is σ = 138275280. Its totient is φ = 21154896.

The previous prime is 63641987. The next prime is 63642011. The reversal of 63642006 is 60024636.

63642006 is a `hidden beast` number, since 636 + 4 + 20 + 0 + 6 = 666.

It is a congruent number.

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, 1975 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (5761470).

Almost surely, 2^63642006 is an apocalyptic number.

63642006 is an abundant number, since it is smaller than the sum of its proper divisors (74633274).

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

63642006 is a wasteful number, since it uses less digits than its factorization.

63642006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9860 (or 9857 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 63642006 is about 7977.5939981927. The cubic root of 63642006 is about 399.2527842072.

The spelling of 63642006 in words is "sixty-three million, six hundred forty-two thousand, six".