1068631 has 2 divisors, whose sum is σ = 1068632. Its totient is φ = 1068630.

The previous prime is 1068629. The next prime is 1068677. The reversal of 1068631 is 1368601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1068631 - 2¹ = 1068629 is a prime.

It is a super-2 number, since 2×1068631² = 2283944428322, which contains 22 as substring.

Together with 1068629, it forms a pair of twin primes.

1068631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1068596 and 1068605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1068611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534315 + 534316.

It is an arithmetic number, because the mean of its divisors is an integer number (534316).

2^1068631 is an apocalyptic number.

1068631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1068631 is an equidigital number, since it uses as much as digits as its factorization.

1068631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1068631 is about 1033.7461003554. The cubic root of 1068631 is about 102.2372728224.

The spelling of 1068631 in words is "one million, sixty-eight thousand, six hundred thirty-one".