6440234633 has 8 divisors (see below), whose sum is σ = 7499141568. Its totient is φ = 5416046064.

The previous prime is 6440234617. The next prime is 6440234681. The reversal of 6440234633 is 3364320446.

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

It is a cyclic number.

It is not a de Polignac number, because 6440234633 - 2⁴ = 6440234617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6440234593 and 6440234602.

It is not an unprimeable number, because it can be changed into a prime (6440234683) 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, 8679191 + ... + 8679932.

It is an arithmetic number, because the mean of its divisors is an integer number (937392696).

Almost surely, 2^6440234633 is an apocalyptic number.

It is an amenable number.

6440234633 is a deficient number, since it is larger than the sum of its proper divisors (1058906935).

6440234633 is a wasteful number, since it uses less digits than its factorization.

6440234633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17359183.

The product of its (nonzero) digits is 124416, while the sum is 35.

The square root of 6440234633 is about 80251.0724725844. The cubic root of 6440234633 is about 1860.5180883245.

The spelling of 6440234633 in words is "six billion, four hundred forty million, two hundred thirty-four thousand, six hundred thirty-three".