662668 has 6 divisors (see below), whose sum is σ = 1159676. Its totient is φ = 331332.

The previous prime is 662657. The next prime is 662671. The reversal of 662668 is 866266.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82830 + ... + 82837.

2⁶⁶²⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

662668 is a deficient number, since it is larger than the sum of its proper divisors (497008).

662668 is a wasteful number, since it uses less digits than its factorization.

662668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165671 (or 165669 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 662668 is about 814.0442248429. The cubic root of 662668 is about 87.1830382518.

The spelling of 662668 in words is "six hundred sixty-two thousand, six hundred sixty-eight".