6610420240 has 40 divisors (see below), whose sum is σ = 15394996800. Its totient is φ = 2639734656.

The previous prime is 6610420217. The next prime is 6610420247. The reversal of 6610420240 is 420240166.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (6610420247) 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, 21054 + ... + 116893.

It is an arithmetic number, because the mean of its divisors is an integer number (384874920).

Almost surely, 2^6610420240 is an apocalyptic number.

It is an amenable number.

6610420240 is an abundant number, since it is smaller than the sum of its proper divisors (8784576560).

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

6610420240 is a wasteful number, since it uses less digits than its factorization.

6610420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138559 (or 138553 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 6610420240 is about 81304.4908968748. The cubic root of 6610420240 is about 1876.7641106038.

The spelling of 6610420240 in words is "six billion, six hundred ten million, four hundred twenty thousand, two hundred forty".