64227744 has 72 divisors (see below), whose sum is σ = 208746720. Its totient is φ = 18350208.

The previous prime is 64227727. The next prime is 64227749. The reversal of 64227744 is 44772246.

It is a happy number.

64227744 is a `hidden beast` number, since 642 + 2 + 7 + 7 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 64227699 and 64227708.

It is not an unprimeable number, because it can be changed into a prime (64227749) 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, 13914 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (2899260).

Almost surely, 2^64227744 is an apocalyptic number.

It is an amenable number.

64227744 is an abundant number, since it is smaller than the sum of its proper divisors (144518976).

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

64227744 is a wasteful number, since it uses less digits than its factorization.

64227744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31882 (or 31871 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 64227744 is about 8014.2213595583. The cubic root of 64227744 is about 400.4739049801.

The spelling of 64227744 in words is "sixty-four million, two hundred twenty-seven thousand, seven hundred forty-four".