6442764757 has 8 divisors (see below), whose sum is σ = 7569122400. Its totient is φ = 5406515760.

The previous prime is 6442764677. The next prime is 6442764763. The reversal of 6442764757 is 7574672446.

6442764757 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6442764757 - 2²³ = 6434376149 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 (6442764767) 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, 22527007 + ... + 22527292.

It is an arithmetic number, because the mean of its divisors is an integer number (946140300).

Almost surely, 2^6442764757 is an apocalyptic number.

It is an amenable number.

6442764757 is a deficient number, since it is larger than the sum of its proper divisors (1126357643).

6442764757 is a wasteful number, since it uses less digits than its factorization.

6442764757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45054323.

The product of its digits is 7902720, while the sum is 52.

The square root of 6442764757 is about 80266.8347264298. The cubic root of 6442764757 is about 1860.7616987634.

The spelling of 6442764757 in words is "six billion, four hundred forty-two million, seven hundred sixty-four thousand, seven hundred fifty-seven".