2666624406 has 8 divisors (see below), whose sum is σ = 5333248824. Its totient is φ = 888874800.

The previous prime is 2666624399. The next prime is 2666624413. The reversal of 2666624406 is 6044266662.

It is an interprime number because it is at equal distance from previous prime (2666624399) and next prime (2666624413).

It is a sphenic number, since it is the product of 3 distinct primes.

2666624406 is an admirable number.

It is a super-2 number, since 2×2666624406² = 14221771445349705672, 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222218695 + ... + 222218706.

It is an arithmetic number, because the mean of its divisors is an integer number (666656103).

Almost surely, 2^2666624406 is an apocalyptic number.

2666624406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2666624406 is a wasteful number, since it uses less digits than its factorization.

2666624406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444437406.

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 2666624406 is about 51639.3687606655. The cubic root of 2666624406 is about 1386.7152231851.

The spelling of 2666624406 in words is "two billion, six hundred sixty-six million, six hundred twenty-four thousand, four hundred six".