1263667 has 2 divisors, whose sum is σ = 1263668. Its totient is φ = 1263666.

The previous prime is 1263659. The next prime is 1263677. The reversal of 1263667 is 7663621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263667 - 2³ = 1263659 is a prime.

1263667 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1263607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631833 + 631834.

It is an arithmetic number, because the mean of its divisors is an integer number (631834).

2^1263667 is an apocalyptic number.

1263667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263667 is an equidigital number, since it uses as much as digits as its factorization.

1263667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 1263667 is about 1124.1294409453. The cubic root of 1263667 is about 108.1129077548.

The spelling of 1263667 in words is "one million, two hundred sixty-three thousand, six hundred sixty-seven".