6498990 has 24 divisors (see below), whose sum is σ = 16897608. Its totient is φ = 1733040.

The previous prime is 6498979. The next prime is 6499037. The reversal of 6498990 is 998946.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36016 + ... + 36195.

It is an arithmetic number, because the mean of its divisors is an integer number (704067).

Almost surely, 2^6498990 is an apocalyptic number.

6498990 is an abundant number, since it is smaller than the sum of its proper divisors (10398618).

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

6498990 is a wasteful number, since it uses less digits than its factorization.

6498990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72224 (or 72221 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 6498990 is about 2549.3116718048. The cubic root of 6498990 is about 186.6158910933.

The spelling of 6498990 in words is "six million, four hundred ninety-eight thousand, nine hundred ninety".