1263461 has 2 divisors, whose sum is σ = 1263462. Its totient is φ = 1263460.

The previous prime is 1263403. The next prime is 1263463. The reversal of 1263461 is 1643621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 42436 = 1105^2 + 206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263461 is a prime.

Together with 1263463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631730 + 631731.

It is an arithmetic number, because the mean of its divisors is an integer number (631731).

2^1263461 is an apocalyptic number.

It is an amenable number.

1263461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263461 is an equidigital number, since it uses as much as digits as its factorization.

1263461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 1263461 is about 1124.0378107519. The cubic root of 1263461 is about 108.1070326655.

The spelling of 1263461 in words is "one million, two hundred sixty-three thousand, four hundred sixty-one".