1263648 has 24 divisors (see below), whose sum is σ = 3317328. Its totient is φ = 421184.

The previous prime is 1263631. The next prime is 1263659. The reversal of 1263648 is 8463621.

1263648 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6486 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (138222).

2^1263648 is an apocalyptic number.

It is an amenable number.

1263648 is an abundant number, since it is smaller than the sum of its proper divisors (2053680).

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

1263648 is a wasteful number, since it uses less digits than its factorization.

1263648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13176 (or 13168 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 1263648 is about 1124.1209899295. The cubic root of 1263648 is about 108.1123659044.

The spelling of 1263648 in words is "one million, two hundred sixty-three thousand, six hundred forty-eight".