1263604 has 12 divisors (see below), whose sum is σ = 2233504. Its totient is φ = 625464.

The previous prime is 1263599. The next prime is 1263607. The reversal of 1263604 is 4063621.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263607) 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, 1122 + ... + 1945.

2^1263604 is an apocalyptic number.

It is an amenable number.

1263604 is a deficient number, since it is larger than the sum of its proper divisors (969900).

1263604 is a wasteful number, since it uses less digits than its factorization.

1263604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1263604 is about 1124.1014189120. The cubic root of 1263604 is about 108.1111110720. Note that the first 6 decimals are identical.

The spelling of 1263604 in words is "one million, two hundred sixty-three thousand, six hundred four".