662081 has 4 divisors (see below), whose sum is σ = 756672. Its totient is φ = 567492.

The previous prime is 662063. The next prime is 662083. The reversal of 662081 is 180266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 662081 - 2¹⁸ = 399937 is a prime.

It is a super-2 number, since 2×662081² = 876702501122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (662083) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 47285 + ... + 47298.

It is an arithmetic number, because the mean of its divisors is an integer number (189168).

2⁶⁶²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

662081 is a deficient number, since it is larger than the sum of its proper divisors (94591).

662081 is an equidigital number, since it uses as much as digits as its factorization.

662081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94590.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 662081 is about 813.6835994415. The cubic root of 662081 is about 87.1572880210.

The spelling of 662081 in words is "six hundred sixty-two thousand, eighty-one".