6538890 has 32 divisors (see below), whose sum is σ = 15782976. Its totient is φ = 1733760.

The previous prime is 6538879. The next prime is 6538927. The reversal of 6538890 is 988356.

It is a super-3 number, since 3×6538890³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5814 + ... + 6846.

It is an arithmetic number, because the mean of its divisors is an integer number (493218).

Almost surely, 2^6538890 is an apocalyptic number.

6538890 is an abundant number, since it is smaller than the sum of its proper divisors (9244086).

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

6538890 is a wasteful number, since it uses less digits than its factorization.

6538890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 6538890 is about 2557.1253391259. The cubic root of 6538890 is about 186.9970163574.

The spelling of 6538890 in words is "six million, five hundred thirty-eight thousand, eight hundred ninety".