6404404634 has 8 divisors (see below), whose sum is σ = 9606963828. Its totient is φ = 3202083360.

The previous prime is 6404404609. The next prime is 6404404637. The reversal of 6404404634 is 4364044046.

It can be written as a sum of positive squares in 2 ways, for example, as 5959068025 + 445336609 = 77195^2 + 21103^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6404404594 and 6404404603.

It is not an unprimeable number, because it can be changed into a prime (6404404637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43424 + ... + 121220.

Almost surely, 2^6404404634 is an apocalyptic number.

6404404634 is a deficient number, since it is larger than the sum of its proper divisors (3202559194).

6404404634 is a wasteful number, since it uses less digits than its factorization.

6404404634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118960.

The product of its (nonzero) digits is 110592, while the sum is 35.

The square root of 6404404634 is about 80027.5242276056. The cubic root of 6404404634 is about 1857.0613628545.

The spelling of 6404404634 in words is "six billion, four hundred four million, four hundred four thousand, six hundred thirty-four".