64020222 has 24 divisors (see below), whose sum is σ = 158526576. Its totient is φ = 18291456.

The previous prime is 64020221. The next prime is 64020233. The reversal of 64020222 is 22202046.

It is a happy number.

64020222 is a `hidden beast` number, since 640 + 2 + 0 + 2 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 64020195 and 64020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253923 + ... + 254174.

It is an arithmetic number, because the mean of its divisors is an integer number (6605274).

Almost surely, 2^64020222 is an apocalyptic number.

64020222 is an abundant number, since it is smaller than the sum of its proper divisors (94506354).

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

64020222 is a wasteful number, since it uses less digits than its factorization.

64020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508112 (or 508109 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 64020222 is about 8001.2637751795. The cubic root of 64020222 is about 400.0421247303.

Adding to 64020222 its reverse (22202046), we get a palindrome (86222268).

The spelling of 64020222 in words is "sixty-four million, twenty thousand, two hundred twenty-two".