64227618 has 96 divisors (see below), whose sum is σ = 173287296. Its totient is φ = 16740864.

The previous prime is 64227599. The next prime is 64227623. The reversal of 64227618 is 81672246.

64227618 is a `hidden beast` number, since 642 + 2 + 7 + 6 + 1 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184921 + ... + 185267.

It is an arithmetic number, because the mean of its divisors is an integer number (1805076).

Almost surely, 2^64227618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64227618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86643648).

64227618 is an abundant number, since it is smaller than the sum of its proper divisors (109059678).

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

64227618 is a wasteful number, since it uses less digits than its factorization.

64227618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 64227618 is about 8014.2134985287. The cubic root of 64227618 is about 400.4736431008.

The spelling of 64227618 in words is "sixty-four million, two hundred twenty-seven thousand, six hundred eighteen".