63840546 has 48 divisors (see below), whose sum is σ = 172456128. Its totient is φ = 16581600.

The previous prime is 63840541. The next prime is 63840547. The reversal of 63840546 is 64504836.

It is a self number, because there is not a number n which added to its sum of digits gives 63840546.

It is not an unprimeable number, because it can be changed into a prime (63840541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21645 + ... + 24416.

It is an arithmetic number, because the mean of its divisors is an integer number (3592836).

Almost surely, 2^63840546 is an apocalyptic number.

63840546 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

63840546 is an abundant number, since it is smaller than the sum of its proper divisors (108615582).

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

63840546 is a wasteful number, since it uses less digits than its factorization.

63840546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46087 (or 46084 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 63840546 is about 7990.0279098386. The cubic root of 63840546 is about 399.6675278990.

The spelling of 63840546 in words is "sixty-three million, eight hundred forty thousand, five hundred forty-six".