63840675 has 12 divisors (see below), whose sum is σ = 105550040. Its totient is φ = 34048320.

The previous prime is 63840547. The next prime is 63840677. The reversal of 63840675 is 57604836.

63840675 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63840675 - 2⁷ = 63840547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63840677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425530 + ... + 425679.

Almost surely, 2^63840675 is an apocalyptic number.

63840675 is a deficient number, since it is larger than the sum of its proper divisors (41709365).

63840675 is a wasteful number, since it uses less digits than its factorization.

63840675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851222 (or 851217 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 63840675 is about 7990.0359823971. The cubic root of 63840675 is about 399.6677970961.

The spelling of 63840675 in words is "sixty-three million, eight hundred forty thousand, six hundred seventy-five".