1263916 has 12 divisors (see below), whose sum is σ = 2342088. Its totient is φ = 594752.

The previous prime is 1263887. The next prime is 1263917. The reversal of 1263916 is 6193621.

It is not an unprimeable number, because it can be changed into a prime (1263917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9226 + ... + 9361.

It is an arithmetic number, because the mean of its divisors is an integer number (195174).

2^1263916 is an apocalyptic number.

It is an amenable number.

1263916 is a deficient number, since it is larger than the sum of its proper divisors (1078172).

1263916 is a wasteful number, since it uses less digits than its factorization.

1263916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18608 (or 18606 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 1263916 is about 1124.2401878602. The cubic root of 1263916 is about 108.1200083454.

The spelling of 1263916 in words is "one million, two hundred sixty-three thousand, nine hundred sixteen".