662531 has 2 divisors, whose sum is σ = 662532. Its totient is φ = 662530.

The previous prime is 662527. The next prime is 662537. The reversal of 662531 is 135266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662531 - 2² = 662527 is a prime.

It is a super-2 number, since 2×662531² = 877894651922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6 + 6 + 5 + 2¹⁷ + 3¹² + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 662497 and 662506.

It is not a weakly prime, because it can be changed into another prime (662537) 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 as a sum of consecutive naturals, namely, 331265 + 331266.

It is an arithmetic number, because the mean of its divisors is an integer number (331266).

2⁶⁶²⁵³¹ is an apocalyptic number.

662531 is a deficient number, since it is larger than the sum of its proper divisors (1).

662531 is an equidigital number, since it uses as much as digits as its factorization.

662531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 662531 is about 813.9600727308. The cubic root of 662531 is about 87.1770297632.

Adding to 662531 its reverse (135266), we get a palindrome (797797).

The spelling of 662531 in words is "six hundred sixty-two thousand, five hundred thirty-one".