66160776 has 64 divisors (see below), whose sum is σ = 182963520. Its totient is φ = 19768320.

The previous prime is 66160763. The next prime is 66160781. The reversal of 66160776 is 67706166.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 17556 + ... + 20988.

It is an arithmetic number, because the mean of its divisors is an integer number (2858805).

Almost surely, 2^66160776 is an apocalyptic number.

66160776 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66160776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91481760).

66160776 is an abundant number, since it is smaller than the sum of its proper divisors (116802744).

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

66160776 is a wasteful number, since it uses less digits than its factorization.

66160776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526 (or 3522 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 66160776 is about 8133.9274646385. The cubic root of 66160776 is about 404.4518846552.

The spelling of 66160776 in words is "sixty-six million, one hundred sixty thousand, seven hundred seventy-six".