64506755 has 16 divisors (see below), whose sum is σ = 82892160. Its totient is φ = 48018432.

The previous prime is 64506713. The next prime is 64506763. The reversal of 64506755 is 55760546.

64506755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64506755 is a prime.

It is a super-2 number, since 2×64506755² = 8322242881260050, which contains 22 as substring.

It is an unprimeable number.

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, 3302 + ... + 11828.

It is an arithmetic number, because the mean of its divisors is an integer number (5180760).

Almost surely, 2^64506755 is an apocalyptic number.

64506755 is a deficient number, since it is larger than the sum of its proper divisors (18385405).

64506755 is a wasteful number, since it uses less digits than its factorization.

64506755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8638.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 64506755 is about 8031.6097390249. The cubic root of 64506755 is about 401.0529653113.

The spelling of 64506755 in words is "sixty-four million, five hundred six thousand, seven hundred fifty-five".