2320646406 has 64 divisors (see below), whose sum is σ = 5063520000. Its totient is φ = 704785536.

The previous prime is 2320646389. The next prime is 2320646413. The reversal of 2320646406 is 6046460232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4242225 + ... + 4242771.

It is an arithmetic number, because the mean of its divisors is an integer number (79117500).

Almost surely, 2^2320646406 is an apocalyptic number.

2320646406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2320646406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2531760000).

2320646406 is an abundant number, since it is smaller than the sum of its proper divisors (2742873594).

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

2320646406 is a wasteful number, since it uses less digits than its factorization.

2320646406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 2320646406 is about 48173.0879848905. The cubic root of 2320646406 is about 1323.9441273204.

The spelling of 2320646406 in words is "two billion, three hundred twenty million, six hundred forty-six thousand, four hundred six".