1246621 has 4 divisors (see below), whose sum is σ = 1263772. Its totient is φ = 1229472.

The previous prime is 1246601. The next prime is 1246631. The reversal of 1246621 is 1266421.

1246621 = 789² + 790².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 624100 + 622521 = 790^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246621 - 2⁵ = 1246589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1246592 and 1246601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8466 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (315943).

2^1246621 is an apocalyptic number.

1246621 is the 790-th centered square number.

It is an amenable number.

1246621 is a deficient number, since it is larger than the sum of its proper divisors (17151).

1246621 is an equidigital number, since it uses as much as digits as its factorization.

1246621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17150.

The product of its digits is 576, while the sum is 22.

The square root of 1246621 is about 1116.5218314032. The cubic root of 1246621 is about 107.6245824442.

The spelling of 1246621 in words is "one million, two hundred forty-six thousand, six hundred twenty-one".