4066626440 has 32 divisors (see below), whose sum is σ = 9688141080. Its totient is φ = 1530964992.

The previous prime is 4066626437. The next prime is 4066626461. The reversal of 4066626440 is 446266604.

4066626440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3871577284 + 195049156 = 62222^2 + 13966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4066626394 and 4066626403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2989487 + ... + 2990846.

Almost surely, 2^4066626440 is an apocalyptic number.

4066626440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4066626440 is an abundant number, since it is smaller than the sum of its proper divisors (5621514640).

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

4066626440 is a wasteful number, since it uses less digits than its factorization.

4066626440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980361 (or 5980357 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 4066626440 is about 63770.1061626841. The cubic root of 4066626440 is about 1596.1661384870.

The spelling of 4066626440 in words is "four billion, sixty-six million, six hundred twenty-six thousand, four hundred forty".