662660 has 24 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 249344.

The previous prime is 662657. The next prime is 662671. The reversal of 662660 is 66266.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 430336 = 482^2 + 656^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635 + ... + 1314.

It is an arithmetic number, because the mean of its divisors is an integer number (61425).

2⁶⁶²⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

662660 is an abundant number, since it is smaller than the sum of its proper divisors (811540).

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

662660 is a wasteful number, since it uses less digits than its factorization.

662660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975 (or 1973 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 662660 is about 814.0393110901. The cubic root of 662660 is about 87.1826874139.

The spelling of 662660 in words is "six hundred sixty-two thousand, six hundred sixty".