1263963 has 8 divisors (see below), whose sum is σ = 1739776. Its totient is φ = 815400.

The previous prime is 1263961. The next prime is 1263973. The reversal of 1263963 is 3693621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1263963 - 2¹ = 1263961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1263963.

It is not an unprimeable number, because it can be changed into a prime (1263961) 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 in 7 ways as a sum of consecutive naturals, for example, 6703 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (217472).

2^1263963 is an apocalyptic number.

1263963 is a deficient number, since it is larger than the sum of its proper divisors (475813).

1263963 is a wasteful number, since it uses less digits than its factorization.

1263963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13625.

The product of its digits is 5832, while the sum is 30.

The square root of 1263963 is about 1124.2610906724. The cubic root of 1263963 is about 108.1213485129.

The spelling of 1263963 in words is "one million, two hundred sixty-three thousand, nine hundred sixty-three".