6404261575 has 12 divisors (see below), whose sum is σ = 7991870680. Its totient is φ = 5090772960.

The previous prime is 6404261561. The next prime is 6404261579. The reversal of 6404261575 is 5751624046.

It is a happy number.

It is not a de Polignac number, because 6404261575 - 2¹⁵ = 6404228807 is a prime.

It is a super-3 number, since 3×6404261575³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404261579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811905 + ... + 819754.

Almost surely, 2^6404261575 is an apocalyptic number.

6404261575 is a deficient number, since it is larger than the sum of its proper divisors (1587609105).

6404261575 is a wasteful number, since it uses less digits than its factorization.

6404261575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631826 (or 1631821 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 6404261575 is about 80026.6304113824. The cubic root of 6404261575 is about 1857.0475353230.

The spelling of 6404261575 in words is "six billion, four hundred four million, two hundred sixty-one thousand, five hundred seventy-five".