64544406 has 16 divisors (see below), whose sum is σ = 135883200. Its totient is φ = 20382408.

The previous prime is 64544351. The next prime is 64544413. The reversal of 64544406 is 60444546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282976 + ... + 283203.

It is an arithmetic number, because the mean of its divisors is an integer number (8492700).

Almost surely, 2^64544406 is an apocalyptic number.

64544406 is an abundant number, since it is smaller than the sum of its proper divisors (71338794).

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

64544406 is a wasteful number, since it uses less digits than its factorization.

64544406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566203.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 64544406 is about 8033.9533232401. The cubic root of 64544406 is about 401.1309783726.

The spelling of 64544406 in words is "sixty-four million, five hundred forty-four thousand, four hundred six".