64224520 has 32 divisors (see below), whose sum is σ = 145356120. Its totient is φ = 25538560.

The previous prime is 64224497. The next prime is 64224527. The reversal of 64224520 is 2542246.

It can be written as a sum of positive squares in 4 ways, for example, as 64224196 + 324 = 8014^2 + 18^2 .

It is not an unprimeable number, because it can be changed into a prime (64224527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280 + ... + 11560.

Almost surely, 2^64224520 is an apocalyptic number.

It is an amenable number.

64224520 is an abundant number, since it is smaller than the sum of its proper divisors (81131600).

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

64224520 is a wasteful number, since it uses less digits than its factorization.

64224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9465 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 64224520 is about 8014.0202145989. The cubic root of 64224520 is about 400.4672040884.

Adding to 64224520 its reverse (2542246), we get a palindrome (66766766).

The spelling of 64224520 in words is "sixty-four million, two hundred twenty-four thousand, five hundred twenty".