66160256 has 16 divisors (see below), whose sum is σ = 131803890. Its totient is φ = 33080064.

The previous prime is 66160253. The next prime is 66160267. The reversal of 66160256 is 65206166.

It can be written as a sum of positive squares in only one way, i.e., 60590656 + 5569600 = 7784^2 + 2360^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (66160253) by changing a digit.

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, 258311 + ... + 258566.

Almost surely, 2^66160256 is an apocalyptic number.

It is an amenable number.

66160256 is a deficient number, since it is larger than the sum of its proper divisors (65643634).

66160256 is an equidigital number, since it uses as much as digits as its factorization.

66160256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516891 (or 516879 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 66160256 is about 8133.8954996975. The cubic root of 66160256 is about 404.4508250368.

The spelling of 66160256 in words is "sixty-six million, one hundred sixty thousand, two hundred fifty-six".