1263404 has 6 divisors (see below), whose sum is σ = 2210964. Its totient is φ = 631700.

The previous prime is 1263403. The next prime is 1263461. The reversal of 1263404 is 4043621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1263403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157922 + ... + 157929.

It is an arithmetic number, because the mean of its divisors is an integer number (368494).

2^1263404 is an apocalyptic number.

It is an amenable number.

1263404 is a deficient number, since it is larger than the sum of its proper divisors (947560).

1263404 is a wasteful number, since it uses less digits than its factorization.

1263404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315855 (or 315853 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1263404 is about 1124.0124554470. The cubic root of 1263404 is about 108.1054069212.

The spelling of 1263404 in words is "one million, two hundred sixty-three thousand, four hundred four".