64756545 has 16 divisors (see below), whose sum is σ = 118412160. Its totient is φ = 29602944.

The previous prime is 64756543. The next prime is 64756567. The reversal of 64756545 is 54565746.

64756545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64756545 - 2¹ = 64756543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64756497 and 64756506.

It is not an unprimeable number, because it can be changed into a prime (64756543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308260 + ... + 308469.

It is an arithmetic number, because the mean of its divisors is an integer number (7400760).

Almost surely, 2^64756545 is an apocalyptic number.

It is an amenable number.

64756545 is a deficient number, since it is larger than the sum of its proper divisors (53655615).

64756545 is a wasteful number, since it uses less digits than its factorization.

64756545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616744.

The product of its digits is 504000, while the sum is 42.

The square root of 64756545 is about 8047.1451459508. The cubic root of 64756545 is about 401.5699653767.

The spelling of 64756545 in words is "sixty-four million, seven hundred fifty-six thousand, five hundred forty-five".