6375440 has 20 divisors (see below), whose sum is σ = 14823084. Its totient is φ = 2550144.

The previous prime is 6375437. The next prime is 6375449. The reversal of 6375440 is 445736.

It can be written as a sum of positive squares in 2 ways, for example, as 4857616 + 1517824 = 2204^2 + 1232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (6375449) 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, 39767 + ... + 39926.

Almost surely, 2^6375440 is an apocalyptic number.

It is an amenable number.

6375440 is an abundant number, since it is smaller than the sum of its proper divisors (8447644).

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

6375440 is a wasteful number, since it uses less digits than its factorization.

6375440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79706 (or 79700 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 6375440 is about 2524.9633660709. The cubic root of 6375440 is about 185.4257542713.

The spelling of 6375440 in words is "six million, three hundred seventy-five thousand, four hundred forty".