1268645 has 16 divisors (see below), whose sum is σ = 1769088. Its totient is φ = 855360.

The previous prime is 1268633. The next prime is 1268669. The reversal of 1268645 is 5468621.

It is a de Polignac number, because none of the positive numbers 2^k-1268645 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2075 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (110568).

2^1268645 is an apocalyptic number.

It is an amenable number.

1268645 is a deficient number, since it is larger than the sum of its proper divisors (500443).

1268645 is an equidigital number, since it uses as much as digits as its factorization.

1268645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620.

The product of its digits is 11520, while the sum is 32.

The square root of 1268645 is about 1126.3414224825. The cubic root of 1268645 is about 108.2546858499.

The spelling of 1268645 in words is "one million, two hundred sixty-eight thousand, six hundred forty-five".