610666240 has 72 divisors (see below), whose sum is σ = 1468000800. Its totient is φ = 243388416.

The previous prime is 610666211. The next prime is 610666279. The reversal of 610666240 is 42666016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446037 + ... + 447403.

It is an arithmetic number, because the mean of its divisors is an integer number (20388900).

Almost surely, 2^610666240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 610666240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734000400).

610666240 is an abundant number, since it is smaller than the sum of its proper divisors (857334560).

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

610666240 is a wasteful number, since it uses less digits than its factorization.

610666240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 610666240 is about 24711.6620242346. The cubic root of 610666240 is about 848.4012578299.

The spelling of 610666240 in words is "six hundred ten million, six hundred sixty-six thousand, two hundred forty".