65662218 has 32 divisors (see below), whose sum is σ = 146188800. Its totient is φ = 21846528.

The previous prime is 65662189. The next prime is 65662231. The reversal of 65662218 is 81226656.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45898 + ... + 47306.

It is an arithmetic number, because the mean of its divisors is an integer number (4568400).

Almost surely, 2^65662218 is an apocalyptic number.

65662218 is an abundant number, since it is smaller than the sum of its proper divisors (80526582).

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

65662218 is a wasteful number, since it uses less digits than its factorization.

65662218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283 (or 2277 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 65662218 is about 8103.2226922379. Note that the first 3 decimals coincide. The cubic root of 65662218 is about 403.4333992701.

The spelling of 65662218 in words is "sixty-five million, six hundred sixty-two thousand, two hundred eighteen".