662631 has 4 divisors (see below), whose sum is σ = 883512. Its totient is φ = 441752.

The previous prime is 662617. The next prime is 662639. The reversal of 662631 is 136266.

662631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 662631 - 2⁶ = 662567 is a prime.

It is a super-2 number, since 2×662631² = 878159684322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662639) 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, 110436 + ... + 110441.

It is an arithmetic number, because the mean of its divisors is an integer number (220878).

2⁶⁶²⁶³¹ is an apocalyptic number.

662631 is a deficient number, since it is larger than the sum of its proper divisors (220881).

662631 is a wasteful number, since it uses less digits than its factorization.

662631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220880.

The product of its digits is 1296, while the sum is 24.

The square root of 662631 is about 814.0214984876. The cubic root of 662631 is about 87.1814156030.

Adding to 662631 its reverse (136266), we get a palindrome (798897).

The spelling of 662631 in words is "six hundred sixty-two thousand, six hundred thirty-one".