1263606 has 8 divisors (see below), whose sum is σ = 2527224. Its totient is φ = 421200.

The previous prime is 1263599. The next prime is 1263607. The reversal of 1263606 is 6063621.

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

1263606 is an admirable number.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105295 + ... + 105306.

It is an arithmetic number, because the mean of its divisors is an integer number (315903).

2^1263606 is an apocalyptic number.

1263606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1263606 is a wasteful number, since it uses less digits than its factorization.

1263606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210606.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1263606 is about 1124.1023085111. The cubic root of 1263606 is about 108.1111681105. Note that the first 4 decimals are identical.

The spelling of 1263606 in words is "one million, two hundred sixty-three thousand, six hundred six".