775397 has 4 divisors (see below), whose sum is σ = 886176. Its totient is φ = 664620.

The previous prime is 775393. The next prime is 775417. The reversal of 775397 is 793577.

It is a happy number.

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: 793577 = 17 ⋅46681.

It is a cyclic number.

It is not a de Polignac number, because 775397 - 2² = 775393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 775397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775393) 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, 55379 + ... + 55392.

It is an arithmetic number, because the mean of its divisors is an integer number (221544).

2⁷⁷⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

775397 is a deficient number, since it is larger than the sum of its proper divisors (110779).

775397 is a wasteful number, since it uses less digits than its factorization.

775397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110778.

The product of its digits is 46305, while the sum is 38.

The square root of 775397 is about 880.5662950624. The cubic root of 775397 is about 91.8702092308.

The spelling of 775397 in words is "seven hundred seventy-five thousand, three hundred ninety-seven".