65487618 has 48 divisors (see below), whose sum is σ = 165484800. Its totient is φ = 18708984.

The previous prime is 65487607. The next prime is 65487637. The reversal of 65487618 is 81678456.

It is a happy number.

It is a super-2 number, since 2×65487618² = 8577256222627848, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 871 + ... + 11477.

It is an arithmetic number, because the mean of its divisors is an integer number (3447600).

Almost surely, 2^65487618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65487618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82742400).

65487618 is an abundant number, since it is smaller than the sum of its proper divisors (99997182).

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

65487618 is a wasteful number, since it uses less digits than its factorization.

65487618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10636 (or 10619 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 65487618 is about 8092.4420294495. The cubic root of 65487618 is about 403.0754968599.

The spelling of 65487618 in words is "sixty-five million, four hundred eighty-seven thousand, six hundred eighteen".