8406450666 has 48 divisors (see below), whose sum is σ = 19293697800. Its totient is φ = 2636181504.

The previous prime is 8406450643. The next prime is 8406450667. The reversal of 8406450666 is 6660546048.

It can be written as a sum of positive squares in 4 ways, for example, as 8331125625 + 75325041 = 91275^2 + 8679^2 .

It is not an unprimeable number, because it can be changed into a prime (8406450667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 965380 + ... + 974048.

Almost surely, 2^8406450666 is an apocalyptic number.

8406450666 is an abundant number, since it is smaller than the sum of its proper divisors (10887247134).

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

8406450666 is a wasteful number, since it uses less digits than its factorization.

8406450666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11863 (or 11860 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 8406450666 is about 91686.6984136739. The cubic root of 8406450666 is about 2033.3129323463.

The spelling of 8406450666 in words is "eight billion, four hundred six million, four hundred fifty thousand, six hundred sixty-six".