1251606 has 16 divisors (see below), whose sum is σ = 2635200. Its totient is φ = 395208.

The previous prime is 1251583. The next prime is 1251641. The reversal of 1251606 is 6061521.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5376 + ... + 5603.

It is an arithmetic number, because the mean of its divisors is an integer number (164700).

2^1251606 is an apocalyptic number.

1251606 is an abundant number, since it is smaller than the sum of its proper divisors (1383594).

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

1251606 is a wasteful number, since it uses less digits than its factorization.

1251606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11003.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1251606 is about 1118.7519832385. The cubic root of 1251606 is about 107.7678483864.

The spelling of 1251606 in words is "one million, two hundred fifty-one thousand, six hundred six".