1246661 has 8 divisors (see below), whose sum is σ = 1421784. Its totient is φ = 1082880.

The previous prime is 1246639. The next prime is 1246667. The reversal of 1246661 is 1666421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 498436 + 748225 = 706^2 + 865^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1246661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1246661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (177723).

2^1246661 is an apocalyptic number.

It is an amenable number.

1246661 is a deficient number, since it is larger than the sum of its proper divisors (175123).

1246661 is a wasteful number, since it uses less digits than its factorization.

1246661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671.

The product of its digits is 1728, while the sum is 26.

The square root of 1246661 is about 1116.5397440306. The cubic root of 1246661 is about 107.6257335391.

The spelling of 1246661 in words is "one million, two hundred forty-six thousand, six hundred sixty-one".