63745618 has 8 divisors (see below), whose sum is σ = 96371712. Its totient is φ = 31621716.

The previous prime is 63745613. The next prime is 63745621. The reversal of 63745618 is 81654736.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (63745613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125230 + ... + 125737.

It is an arithmetic number, because the mean of its divisors is an integer number (12046464).

Almost surely, 2^63745618 is an apocalyptic number.

63745618 is a deficient number, since it is larger than the sum of its proper divisors (32626094).

63745618 is a wasteful number, since it uses less digits than its factorization.

63745618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251096.

The product of its digits is 120960, while the sum is 40.

The square root of 63745618 is about 7984.0852951356. The cubic root of 63745618 is about 399.4693337948.

The spelling of 63745618 in words is "sixty-three million, seven hundred forty-five thousand, six hundred eighteen".