3706806081 has 12 divisors (see below), whose sum is σ = 5432564816. Its totient is φ = 2246548920.

The previous prime is 3706806073. The next prime is 3706806091. The reversal of 3706806081 is 1806086073.

It is not a de Polignac number, because 3706806081 - 2³ = 3706806073 is a prime.

It is a super-2 number, since 2×3706806081² = 27480822644277157122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3706806001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5105431 + ... + 5106156.

Almost surely, 2^3706806081 is an apocalyptic number.

It is an amenable number.

3706806081 is a deficient number, since it is larger than the sum of its proper divisors (1725758735).

3706806081 is a wasteful number, since it uses less digits than its factorization.

3706806081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211612 (or 10211601 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3706806081 is about 60883.5452400729. The cubic root of 3706806081 is about 1547.6281561014.

The spelling of 3706806081 in words is "three billion, seven hundred six million, eight hundred six thousand, eighty-one".