6469075440 has 60 divisors (see below), whose sum is σ = 21725314104. Its totient is φ = 1725086592.

The previous prime is 6469075411. The next prime is 6469075447. The reversal of 6469075440 is 445709646.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×6469075440² = 83697874096822387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469075447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4491694 + ... + 4493133.

Almost surely, 2^6469075440 is an apocalyptic number.

6469075440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6469075440 is an abundant number, since it is smaller than the sum of its proper divisors (15256238664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6469075440 is a wasteful number, since it uses less digits than its factorization.

6469075440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984846 (or 8984837 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 6469075440 is about 80430.5628477136. The cubic root of 6469075440 is about 1863.2912245060.

The spelling of 6469075440 in words is "six billion, four hundred sixty-nine million, seventy-five thousand, four hundred forty".