6487890 has 16 divisors (see below), whose sum is σ = 15571008. Its totient is φ = 1730096.

The previous prime is 6487879. The next prime is 6487903. The reversal of 6487890 is 987846.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108102 + ... + 108161.

It is an arithmetic number, because the mean of its divisors is an integer number (973188).

Almost surely, 2^6487890 is an apocalyptic number.

6487890 is an abundant number, since it is smaller than the sum of its proper divisors (9083118).

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

6487890 is a wasteful number, since it uses less digits than its factorization.

6487890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216273.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 6487890 is about 2547.1336831819. The cubic root of 6487890 is about 186.5095865332.

The spelling of 6487890 in words is "six million, four hundred eighty-seven thousand, eight hundred ninety".