5640498 has 24 divisors (see below), whose sum is σ = 12940668. Its totient is φ = 1769472.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640498 is 8940465.

5640498 is a `hidden beast` number, since 5 + 640 + 4 + 9 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5461569 + 178929 = 2337^2 + 423^2 .

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, 8911 + ... + 9522.

Almost surely, 2^5640498 is an apocalyptic number.

5640498 is an abundant number, since it is smaller than the sum of its proper divisors (7300170).

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

5640498 is a wasteful number, since it uses less digits than its factorization.

5640498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458 (or 18455 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 5640498 is about 2374.9732630074. The cubic root of 5640498 is about 178.0078479896.

The spelling of 5640498 in words is "five million, six hundred forty thousand, four hundred ninety-eight".