6653240 has 32 divisors (see below), whose sum is σ = 16331760. Its totient is φ = 2419200.

The previous prime is 6653221. The next prime is 6653243. The reversal of 6653240 is 423566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7121 + ... + 8000.

Almost surely, 2^6653240 is an apocalyptic number.

It is an amenable number.

6653240 is an abundant number, since it is smaller than the sum of its proper divisors (9678520).

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

6653240 is a wasteful number, since it uses less digits than its factorization.

6653240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15143 (or 15139 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 6653240 is about 2579.3875242003. The cubic root of 6653240 is about 188.0807710875.

The spelling of 6653240 in words is "six million, six hundred fifty-three thousand, two hundred forty".