662557 has 4 divisors (see below), whose sum is σ = 757216. Its totient is φ = 567900.

The previous prime is 662551. The next prime is 662567. The reversal of 662557 is 755266.

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, and also an emirpimes, since its reverse is a distinct semiprime: 755266 = 2 ⋅377633.

It is a cyclic number.

It is not a de Polignac number, because 662557 - 2¹¹ = 660509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47319 + ... + 47332.

It is an arithmetic number, because the mean of its divisors is an integer number (189304).

2⁶⁶²⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

662557 is a deficient number, since it is larger than the sum of its proper divisors (94659).

662557 is an equidigital number, since it uses as much as digits as its factorization.

662557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94658.

The product of its digits is 12600, while the sum is 31.

The square root of 662557 is about 813.9760438735. The cubic root of 662557 is about 87.1781701240.

The spelling of 662557 in words is "six hundred sixty-two thousand, five hundred fifty-seven".