64550244 has 48 divisors (see below), whose sum is σ = 164969280. Its totient is φ = 19482240.

The previous prime is 64550231. The next prime is 64550257. The reversal of 64550244 is 44205546.

It is an interprime number because it is at equal distance from previous prime (64550231) and next prime (64550257).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37842 + ... + 39510.

It is an arithmetic number, because the mean of its divisors is an integer number (3436860).

Almost surely, 2^64550244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64550244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82484640).

64550244 is an abundant number, since it is smaller than the sum of its proper divisors (100419036).

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

64550244 is a wasteful number, since it uses less digits than its factorization.

64550244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980 (or 1978 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 64550244 is about 8034.3166479795. The cubic root of 64550244 is about 401.1430720210.

It can be divided in two parts, 645502 and 44, that added together give a palindrome (645546).

The spelling of 64550244 in words is "sixty-four million, five hundred fifty thousand, two hundred forty-four".