662611660 has 48 divisors (see below), whose sum is σ = 1438238592. Its totient is φ = 256256000.

The previous prime is 662611657. The next prime is 662611723. The reversal of 662611660 is 66116266.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89085 + ... + 96235.

It is an arithmetic number, because the mean of its divisors is an integer number (29963304).

Almost surely, 2^662611660 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 662611660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719119296).

662611660 is an abundant number, since it is smaller than the sum of its proper divisors (775626932).

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

662611660 is a wasteful number, since it uses less digits than its factorization.

662611660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314 (or 7312 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 662611660 is about 25741.2443366672. The cubic root of 662611660 is about 871.8056741596.

The spelling of 662611660 in words is "six hundred sixty-two million, six hundred eleven thousand, six hundred sixty".