64648244 has 12 divisors (see below), whose sum is σ = 113277024. Its totient is φ = 32283384.

The previous prime is 64648219. The next prime is 64648249. The reversal of 64648244 is 44284646.

It is a junction number, because it is equal to n+sod(n) for n = 64648198 and 64648207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64648249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6464 + ... + 13079.

It is an arithmetic number, because the mean of its divisors is an integer number (9439752).

Almost surely, 2^64648244 is an apocalyptic number.

It is an amenable number.

64648244 is a deficient number, since it is larger than the sum of its proper divisors (48628780).

64648244 is a wasteful number, since it uses less digits than its factorization.

64648244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20374 (or 20372 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The square root of 64648244 is about 8040.4131734632. The cubic root of 64648244 is about 401.3459741373.

The spelling of 64648244 in words is "sixty-four million, six hundred forty-eight thousand, two hundred forty-four".