6445244735 has 8 divisors (see below), whose sum is σ = 7748182656. Its totient is φ = 5146936480.

The previous prime is 6445244683. The next prime is 6445244737. The reversal of 6445244735 is 5374425446.

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

It is not a de Polignac number, because 6445244735 - 2¹⁶ = 6445179199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445244737) 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, 1154351 + ... + 1159920.

It is an arithmetic number, because the mean of its divisors is an integer number (968522832).

Almost surely, 2^6445244735 is an apocalyptic number.

6445244735 is a deficient number, since it is larger than the sum of its proper divisors (1302937921).

6445244735 is a wasteful number, since it uses less digits than its factorization.

6445244735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314833.

The product of its digits is 1612800, while the sum is 44.

The square root of 6445244735 is about 80282.2815757001. The cubic root of 6445244735 is about 1861.0004190582. Note that the first 3 decimals are identical.

The spelling of 6445244735 in words is "six billion, four hundred forty-five million, two hundred forty-four thousand, seven hundred thirty-five".