63954618 has 32 divisors (see below), whose sum is σ = 157428096. Its totient is φ = 16867008.

The previous prime is 63954617. The next prime is 63954619. The reversal of 63954618 is 81645936.

It is an interprime number because it is at equal distance from previous prime (63954617) and next prime (63954619).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 63954618.

It is not an unprimeable number, because it can be changed into a prime (63954613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58021 + ... + 59112.

It is an arithmetic number, because the mean of its divisors is an integer number (4919628).

Almost surely, 2^63954618 is an apocalyptic number.

63954618 is an abundant number, since it is smaller than the sum of its proper divisors (93473478).

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

63954618 is a wasteful number, since it uses less digits than its factorization.

63954618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117158.

The product of its digits is 155520, while the sum is 42.

The square root of 63954618 is about 7997.1631220077. The cubic root of 63954618 is about 399.9054318106.

The spelling of 63954618 in words is "sixty-three million, nine hundred fifty-four thousand, six hundred eighteen".