64220450 has 24 divisors (see below), whose sum is σ = 136515072. Its totient is φ = 22018320.

The previous prime is 64220449. The next prime is 64220459. The reversal of 64220450 is 5402246.

It is not an unprimeable number, because it can be changed into a prime (64220459) 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, 91394 + ... + 92093.

It is an arithmetic number, because the mean of its divisors is an integer number (5688128).

Almost surely, 2^64220450 is an apocalyptic number.

64220450 is an abundant number, since it is smaller than the sum of its proper divisors (72294622).

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

64220450 is a wasteful number, since it uses less digits than its factorization.

64220450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183506 (or 183501 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 64220450 is about 8013.7662805949. The cubic root of 64220450 is about 400.4587445159.

Adding to 64220450 its reverse (5402246), we get a palindrome (69622696).

The spelling of 64220450 in words is "sixty-four million, two hundred twenty thousand, four hundred fifty".