66160520 has 16 divisors (see below), whose sum is σ = 148861260. Its totient is φ = 26464192.

The previous prime is 66160487. The next prime is 66160573. The reversal of 66160520 is 2506166.

66160520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61434244 + 4726276 = 7838^2 + 2174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66160520.

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 3 ways as a sum of consecutive naturals, for example, 826967 + ... + 827046.

Almost surely, 2^66160520 is an apocalyptic number.

It is an amenable number.

66160520 is an abundant number, since it is smaller than the sum of its proper divisors (82700740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66160520 is a wasteful number, since it uses less digits than its factorization.

66160520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654024 (or 1654020 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66160520 is about 8133.9117280679. The cubic root of 66160520 is about 404.4513629976.

Adding to 66160520 its reverse (2506166), we get a palindrome (68666686).

The spelling of 66160520 in words is "sixty-six million, one hundred sixty thousand, five hundred twenty".