65222118 has 64 divisors (see below), whose sum is σ = 159122880. Its totient is φ = 19678464.

The previous prime is 65222057. The next prime is 65222119. The reversal of 65222118 is 81122256.

It is a happy number.

65222118 is a `hidden beast` number, since 652 + 2 + 2 + 1 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 65222091 and 65222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65222119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36330 + ... + 38082.

It is an arithmetic number, because the mean of its divisors is an integer number (2486295).

Almost surely, 2^65222118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65222118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79561440).

65222118 is an abundant number, since it is smaller than the sum of its proper divisors (93900762).

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

65222118 is a wasteful number, since it uses less digits than its factorization.

65222118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1824 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 65222118 is about 8076.0211738207. The cubic root of 65222118 is about 402.5300426375.

The spelling of 65222118 in words is "sixty-five million, two hundred twenty-two thousand, one hundred eighteen".