662091 has 8 divisors (see below), whose sum is σ = 893760. Its totient is φ = 435912.

The previous prime is 662083. The next prime is 662107. The reversal of 662091 is 190266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 662091 - 2³ = 662083 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (662021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2⁶⁶²⁰⁹¹ is an apocalyptic number.

662091 is a deficient number, since it is larger than the sum of its proper divisors (231669).

662091 is a wasteful number, since it uses less digits than its factorization.

662091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 662091 is about 813.6897443129. The cubic root of 662091 is about 87.1577268236.

The spelling of 662091 in words is "six hundred sixty-two thousand, ninety-one".