6387490 has 16 divisors (see below), whose sum is σ = 11564280. Its totient is φ = 2540160.

The previous prime is 6387487. The next prime is 6387499. The reversal of 6387490 is 947836.

It can be written as a sum of positive squares in 4 ways, for example, as 1630729 + 4756761 = 1277^2 + 2181^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6387499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46 + ... + 3574.

Almost surely, 2^6387490 is an apocalyptic number.

6387490 is a deficient number, since it is larger than the sum of its proper divisors (5176790).

6387490 is a wasteful number, since it uses less digits than its factorization.

6387490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 6387490 is about 2527.3484128628. The cubic root of 6387490 is about 185.5425030294.

It can be divided in two parts, 638 and 7490, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 6387490 in words is "six million, three hundred eighty-seven thousand, four hundred ninety".