2066718904 has 8 divisors (see below), whose sum is σ = 3875097960. Its totient is φ = 1033359448.

The previous prime is 2066718869. The next prime is 2066718911. The reversal of 2066718904 is 4098176602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2066718904² = 8542654056301922432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129169924 + ... + 129169939.

It is an arithmetic number, because the mean of its divisors is an integer number (484387245).

Almost surely, 2^2066718904 is an apocalyptic number.

It is an amenable number.

2066718904 is a deficient number, since it is larger than the sum of its proper divisors (1808379056).

2066718904 is a wasteful number, since it uses less digits than its factorization.

2066718904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258339869 (or 258339865 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2066718904 is about 45461.1801870563. The cubic root of 2066718904 is about 1273.7781767351.

The spelling of 2066718904 in words is "two billion, sixty-six million, seven hundred eighteen thousand, nine hundred four".