1263798 has 24 divisors (see below), whose sum is σ = 2785536. Its totient is φ = 414000.

The previous prime is 1263793. The next prime is 1263799. The reversal of 1263798 is 8973621.

1263798 is a `hidden beast` number, since 12 + 637 + 9 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (116064).

2^1263798 is an apocalyptic number.

1263798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1263798 is an abundant number, since it is smaller than the sum of its proper divisors (1521738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263798 is a wasteful number, since it uses less digits than its factorization.

1263798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1217 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1263798 is about 1124.1877067465. The cubic root of 1263798 is about 108.1166435232.

The spelling of 1263798 in words is "one million, two hundred sixty-three thousand, seven hundred ninety-eight".