1263406 has 8 divisors (see below), whose sum is σ = 2006640. Its totient is φ = 594528.

The previous prime is 1263403. The next prime is 1263461. The reversal of 1263406 is 6043621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18546 + ... + 18613.

It is an arithmetic number, because the mean of its divisors is an integer number (250830).

2^1263406 is an apocalyptic number.

1263406 is a deficient number, since it is larger than the sum of its proper divisors (743234).

1263406 is a wasteful number, since it uses less digits than its factorization.

1263406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37178.

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

The square root of 1263406 is about 1124.0133451165. The cubic root of 1263406 is about 108.1054639657.

The spelling of 1263406 in words is "one million, two hundred sixty-three thousand, four hundred six".