64756475 has 48 divisors (see below), whose sum is σ = 96237888. Its totient is φ = 42301440.

The previous prime is 64756469. The next prime is 64756481. The reversal of 64756475 is 57465746.

It is an interprime number because it is at equal distance from previous prime (64756469) and next prime (64756481).

It is not a de Polignac number, because 64756475 - 2¹⁶ = 64690939 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 472607 + ... + 472743.

It is an arithmetic number, because the mean of its divisors is an integer number (2004956).

Almost surely, 2^64756475 is an apocalyptic number.

64756475 is a deficient number, since it is larger than the sum of its proper divisors (31481413).

64756475 is a wasteful number, since it uses less digits than its factorization.

64756475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 259 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The square root of 64756475 is about 8047.1407965811. The cubic root of 64756475 is about 401.5698206814.

Adding to 64756475 its reverse (57465746), we get a palindrome (122222221).

The spelling of 64756475 in words is "sixty-four million, seven hundred fifty-six thousand, four hundred seventy-five".