2066881 has 8 divisors (see below), whose sum is σ = 2147904. Its totient is φ = 1987440.

The previous prime is 2066879. The next prime is 2066887. The reversal of 2066881 is 1886602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2066881 - 2¹ = 2066879 is a prime.

It is a super-2 number, since 2×2066881² = 8543994136322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066887) 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 in 7 ways as a sum of consecutive naturals, for example, 2715 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (268488).

2^2066881 is an apocalyptic number.

It is an amenable number.

2066881 is a deficient number, since it is larger than the sum of its proper divisors (81023).

2066881 is an equidigital number, since it uses as much as digits as its factorization.

2066881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2066881 is about 1437.6651209513. The cubic root of 2066881 is about 127.3811477337.

The spelling of 2066881 in words is "two million, sixty-six thousand, eight hundred eighty-one".