1263973 has 2 divisors, whose sum is σ = 1263974. Its totient is φ = 1263972.

The previous prime is 1263961. The next prime is 1263979. The reversal of 1263973 is 3793621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 588289 = 822^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263973 - 2⁹ = 1263461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631986 + 631987.

It is an arithmetic number, because the mean of its divisors is an integer number (631987).

2^1263973 is an apocalyptic number.

It is an amenable number.

1263973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263973 is an equidigital number, since it uses as much as digits as its factorization.

1263973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 31.

The square root of 1263973 is about 1124.2655380292. The cubic root of 1263973 is about 108.1216336506.

The spelling of 1263973 in words is "one million, two hundred sixty-three thousand, nine hundred seventy-three".