8648531 has 2 divisors, whose sum is σ = 8648532. Its totient is φ = 8648530.

The previous prime is 8648513. The next prime is 8648533. The reversal of 8648531 is 1358468.

Together with previous prime (8648513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8648531 - 2¹⁸ = 8386387 is a prime.

It is a super-2 number, since 2×8648531² = 149594176915922, which contains 22 as substring.

Together with 8648533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8648491 and 8648500.

It is not a weakly prime, because it can be changed into another prime (8648533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324265 + 4324266.

It is an arithmetic number, because the mean of its divisors is an integer number (4324266).

Almost surely, 2^8648531 is an apocalyptic number.

8648531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8648531 is an equidigital number, since it uses as much as digits as its factorization.

8648531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 8648531 is about 2940.8384858744. The cubic root of 8648531 is about 205.2646275187.

The spelling of 8648531 in words is "eight million, six hundred forty-eight thousand, five hundred thirty-one".