1268697 has 4 divisors (see below), whose sum is σ = 1691600. Its totient is φ = 845796.

The previous prime is 1268681. The next prime is 1268713. The reversal of 1268697 is 7968621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7968621 = 3 ⋅2656207.

It is an interprime number because it is at equal distance from previous prime (1268681) and next prime (1268713).

It is not a de Polignac number, because 1268697 - 2⁴ = 1268681 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁷ + 6⁴ + 8⁵ + 6⁷ + 9² + 7⁷ .

It is a D-number.

It is a Duffinian number.

1268697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1268627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211447 + ... + 211452.

It is an arithmetic number, because the mean of its divisors is an integer number (422900).

2^1268697 is an apocalyptic number.

It is an amenable number.

1268697 is a deficient number, since it is larger than the sum of its proper divisors (422903).

1268697 is an equidigital number, since it uses as much as digits as its factorization.

1268697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422902.

The product of its digits is 36288, while the sum is 39.

The square root of 1268697 is about 1126.3645058328. The cubic root of 1268697 is about 108.2561648995.

The spelling of 1268697 in words is "one million, two hundred sixty-eight thousand, six hundred ninety-seven".