64253220 has 48 divisors (see below), whose sum is σ = 180351360. Its totient is φ = 17092096.

The previous prime is 64253219. The next prime is 64253221. The reversal of 64253220 is 2235246.

64253220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64253219) and next prime (64253221).

It is not an unprimeable number, because it can be changed into a prime (64253221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29116 + ... + 31244.

It is an arithmetic number, because the mean of its divisors is an integer number (3757320).

Almost surely, 2^64253220 is an apocalyptic number.

64253220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64253220 is an abundant number, since it is smaller than the sum of its proper divisors (116098140).

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

64253220 is a wasteful number, since it uses less digits than its factorization.

64253220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 64253220 is about 8015.8106265056. The cubic root of 64253220 is about 400.5268474414.

Adding to 64253220 its reverse (2235246), we get a palindrome (66488466).

The spelling of 64253220 in words is "sixty-four million, two hundred fifty-three thousand, two hundred twenty".