1253697 has 4 divisors (see below), whose sum is σ = 1671600. Its totient is φ = 835796.

The previous prime is 1253689. The next prime is 1253701. The reversal of 1253697 is 7963521.

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: 7963521 = 3 ⋅2654507.

It is a cyclic number.

It is not a de Polignac number, because 1253697 - 2³ = 1253689 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁹ + 5⁷ + 3⁷ + 6 + 9⁶ + 7⁶ .

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1253627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208947 + ... + 208952.

It is an arithmetic number, because the mean of its divisors is an integer number (417900).

2^1253697 is an apocalyptic number.

It is an amenable number.

1253697 is a deficient number, since it is larger than the sum of its proper divisors (417903).

1253697 is an equidigital number, since it uses as much as digits as its factorization.

1253697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417902.

The product of its digits is 11340, while the sum is 33.

The square root of 1253697 is about 1119.6861167309. The cubic root of 1253697 is about 107.8278292423.

The spelling of 1253697 in words is "one million, two hundred fifty-three thousand, six hundred ninety-seven".