1260646 has 8 divisors (see below), whose sum is σ = 1952064. Its totient is φ = 609960.

The previous prime is 1260643. The next prime is 1260661. The reversal of 1260646 is 6460621.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1260646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260641) 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, 10105 + ... + 10228.

It is an arithmetic number, because the mean of its divisors is an integer number (244008).

2^1260646 is an apocalyptic number.

1260646 is a deficient number, since it is larger than the sum of its proper divisors (691418).

1260646 is a wasteful number, since it uses less digits than its factorization.

1260646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1260646 is about 1122.7849304297. The cubic root of 1260646 is about 108.0266852212.

Subtracting from 1260646 its sum of digits (25), we obtain a palindrome (1260621).

The spelling of 1260646 in words is "one million, two hundred sixty thousand, six hundred forty-six".