6275647440 has 120 divisors (see below), whose sum is σ = 21755655168. Its totient is φ = 1619516160.

The previous prime is 6275647387. The next prime is 6275647481. The reversal of 6275647440 is 447465726.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118264 + ... + 162903.

Almost surely, 2^6275647440 is an apocalyptic number.

6275647440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6275647440 is an abundant number, since it is smaller than the sum of its proper divisors (15480007728).

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

6275647440 is a wasteful number, since it uses less digits than its factorization.

6275647440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281217 (or 281208 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The square root of 6275647440 is about 79218.9840884115. The cubic root of 6275647440 is about 1844.5319367001.

The spelling of 6275647440 in words is "six billion, two hundred seventy-five million, six hundred forty-seven thousand, four hundred forty".