3066561881 has 32 divisors (see below), whose sum is σ = 3444019200. Its totient is φ = 2717245440.

The previous prime is 3066561863. The next prime is 3066561893. The reversal of 3066561881 is 1881656603.

It is a cyclic number.

It is not a de Polignac number, because 3066561881 - 2²² = 3062367577 is a prime.

It is a super-2 number, since 2×3066561881² = 18807603540004516322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3066561811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3038705 + ... + 3039713.

It is an arithmetic number, because the mean of its divisors is an integer number (107625600).

Almost surely, 2^3066561881 is an apocalyptic number.

3066561881 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3066561881 is a deficient number, since it is larger than the sum of its proper divisors (377457319).

3066561881 is a wasteful number, since it uses less digits than its factorization.

3066561881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 3066561881 is about 55376.5463079813. The cubic root of 3066561881 is about 1452.8381795865.

The spelling of 3066561881 in words is "three billion, sixty-six million, five hundred sixty-one thousand, eight hundred eighty-one".