2340065406 has 64 divisors (see below), whose sum is σ = 5492551680. Its totient is φ = 650691840.

The previous prime is 2340065401. The next prime is 2340065503. The reversal of 2340065406 is 6045600432.

It is a super-2 number, since 2×2340065406² = 10951812208715889672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340065401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 823420 + ... + 826256.

It is an arithmetic number, because the mean of its divisors is an integer number (85821120).

Almost surely, 2^2340065406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2340065406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2746275840).

2340065406 is an abundant number, since it is smaller than the sum of its proper divisors (3152486274).

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

2340065406 is a wasteful number, since it uses less digits than its factorization.

2340065406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 2340065406 is about 48374.2225363881. Note that the first 3 decimals coincide. The cubic root of 2340065406 is about 1327.6267636547.

Adding to 2340065406 its reverse (6045600432), we get a palindrome (8385665838).

The spelling of 2340065406 in words is "two billion, three hundred forty million, sixty-five thousand, four hundred six".