64756 has 6 divisors (see below), whose sum is σ = 113330. Its totient is φ = 32376.

The previous prime is 64747. The next prime is 64763. The reversal of 64756 is 65746.

It can be written as a sum of positive squares in only one way, i.e., 54756 + 10000 = 234^2 + 100^2 .

It is a congruent number.

It is an unprimeable number.

64756 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8091 + ... + 8098.

2⁶⁴⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

64756 is a deficient number, since it is larger than the sum of its proper divisors (48574).

64756 is a wasteful number, since it uses less digits than its factorization.

64756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16193 (or 16191 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 64756 is about 254.4720023893. The cubic root of 64756 is about 40.1568838818.

Adding to 64756 its product of digits (5040), we get a palindrome (69796).

Subtracting 64756 from its reverse (65746), we obtain a triangular number (990 = T₄₄).

It can be divided in two parts, 647 and 56, that added together give a triangular number (703 = T₃₇).

The spelling of 64756 in words is "sixty-four thousand, seven hundred fifty-six".