64755644 has 6 divisors (see below), whose sum is σ = 113322384. Its totient is φ = 32377820.

The previous prime is 64755623. The next prime is 64755659. The reversal of 64755644 is 44655746.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8094452 + ... + 8094459.

It is an arithmetic number, because the mean of its divisors is an integer number (18887064).

Almost surely, 2^64755644 is an apocalyptic number.

It is an amenable number.

64755644 is a deficient number, since it is larger than the sum of its proper divisors (48566740).

64755644 is a wasteful number, since it uses less digits than its factorization.

64755644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188915 (or 16188913 counting only the distinct ones).

The product of its digits is 403200, while the sum is 41.

The square root of 64755644 is about 8047.0891631695. The cubic root of 64755644 is about 401.5681029332.

The spelling of 64755644 in words is "sixty-four million, seven hundred fifty-five thousand, six hundred forty-four".