6404000535 has 80 divisors (see below), whose sum is σ = 12034582560. Its totient is φ = 3254307840.

The previous prime is 6404000489. The next prime is 6404000563. The reversal of 6404000535 is 5350004046.

It is not a de Polignac number, because 6404000535 - 2¹¹ = 6403998487 is a prime.

It is a super-2 number, since 2×6404000535² = 82022445704560572450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6404000499 and 6404000508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 709531 + ... + 718499.

It is an arithmetic number, because the mean of its divisors is an integer number (150432282).

Almost surely, 2^6404000535 is an apocalyptic number.

6404000535 is a deficient number, since it is larger than the sum of its proper divisors (5630582025).

6404000535 is a wasteful number, since it uses less digits than its factorization.

6404000535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070 (or 9061 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 6404000535 is about 80024.9994376757. Note that the first 3 decimals coincide. The cubic root of 6404000535 is about 1857.0223036722.

The spelling of 6404000535 in words is "six billion, four hundred four million, five hundred thirty-five", and thus it is an aban number.