1263608404 has 24 divisors (see below), whose sum is σ = 2255040648. Its totient is φ = 619332480.

The previous prime is 1263608399. The next prime is 1263608407. The reversal of 1263608404 is 4048063621.

It can be written as a sum of positive squares in 4 ways, for example, as 661004100 + 602604304 = 25710^2 + 24548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1263608404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263608407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341814 + ... + 345490.

It is an arithmetic number, because the mean of its divisors is an integer number (93960027).

Almost surely, 2^1263608404 is an apocalyptic number.

It is an amenable number.

1263608404 is a deficient number, since it is larger than the sum of its proper divisors (991432244).

1263608404 is a wasteful number, since it uses less digits than its factorization.

1263608404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5355 (or 5353 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1263608404 is about 35547.2699936296. The cubic root of 1263608404 is about 1081.1123667062.

The spelling of 1263608404 in words is "one billion, two hundred sixty-three million, six hundred eight thousand, four hundred four".