2251666606 has 16 divisors (see below), whose sum is σ = 3860609760. Its totient is φ = 964847520.

The previous prime is 2251666603. The next prime is 2251666727. The reversal of 2251666606 is 6066661522.

2251666606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251666601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160440 + ... + 173908.

It is an arithmetic number, because the mean of its divisors is an integer number (241288110).

Almost surely, 2^2251666606 is an apocalyptic number.

2251666606 is a deficient number, since it is larger than the sum of its proper divisors (1608943154).

2251666606 is a wasteful number, since it uses less digits than its factorization.

2251666606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25419.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 2251666606 is about 47451.7292203351. The cubic root of 2251666606 is about 1310.6941537978.

The spelling of 2251666606 in words is "two billion, two hundred fifty-one million, six hundred sixty-six thousand, six hundred six".