64244442 has 8 divisors (see below), whose sum is σ = 128488896. Its totient is φ = 21414812.

The previous prime is 64244423. The next prime is 64244461. The reversal of 64244442 is 24444246.

It is an interprime number because it is at equal distance from previous prime (64244423) and next prime (64244461).

It is a sphenic number, since it is the product of 3 distinct primes.

64244442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5353698 + ... + 5353709.

It is an arithmetic number, because the mean of its divisors is an integer number (16061112).

Almost surely, 2^64244442 is an apocalyptic number.

64244442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64244442 is a wasteful number, since it uses less digits than its factorization.

64244442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10707412.

The product of its digits is 24576, while the sum is 30.

The square root of 64244442 is about 8015.2630649281. The cubic root of 64244442 is about 400.5086071894.

Adding to 64244442 its reverse (24444246), we get a palindrome (88688688).

The spelling of 64244442 in words is "sixty-four million, two hundred forty-four thousand, four hundred forty-two".