6687489 has 16 divisors (see below), whose sum is σ = 9326592. Its totient is φ = 4258128.

The previous prime is 6687463. The next prime is 6687497. The reversal of 6687489 is 9847866.

It is not a de Polignac number, because 6687489 - 2²¹ = 4590337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6687389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5512 + ... + 6614.

It is an arithmetic number, because the mean of its divisors is an integer number (582912).

Almost surely, 2^6687489 is an apocalyptic number.

It is an amenable number.

6687489 is a deficient number, since it is larger than the sum of its proper divisors (2639103).

6687489 is a wasteful number, since it uses less digits than its factorization.

6687489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its digits is 580608, while the sum is 48.

The square root of 6687489 is about 2586.0179813760. The cubic root of 6687489 is about 188.4029477859.

The spelling of 6687489 in words is "six million, six hundred eighty-seven thousand, four hundred eighty-nine".