6287440 has 20 divisors (see below), whose sum is σ = 14618484. Its totient is φ = 2514944.

The previous prime is 6287431. The next prime is 6287459. The reversal of 6287440 is 447826.

6287440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 3701776 = 1608^2 + 1924^2 .

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

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39217 + ... + 39376.

Almost surely, 2^6287440 is an apocalyptic number.

It is an amenable number.

6287440 is an abundant number, since it is smaller than the sum of its proper divisors (8331044).

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

6287440 is a wasteful number, since it uses less digits than its factorization.

6287440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78606 (or 78600 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6287440 is about 2507.4768194342. The cubic root of 6287440 is about 184.5686566210.

The spelling of 6287440 in words is "six million, two hundred eighty-seven thousand, four hundred forty".