785397 has 4 divisors (see below), whose sum is σ = 1047200. Its totient is φ = 523596.

The previous prime is 785377. The next prime is 785413. The reversal of 785397 is 793587.

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: 793587 = 3 ⋅264529.

It is not a de Polignac number, because 785397 - 2⁶ = 785333 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785347) 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, 130897 + ... + 130902.

It is an arithmetic number, because the mean of its divisors is an integer number (261800).

2⁷⁸⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

785397 is a deficient number, since it is larger than the sum of its proper divisors (261803).

785397 is a wasteful number, since it uses less digits than its factorization.

785397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261802.

The product of its digits is 52920, while the sum is 39.

The square root of 785397 is about 886.2262690758. The cubic root of 785397 is about 92.2634618760.

The spelling of 785397 in words is "seven hundred eighty-five thousand, three hundred ninety-seven".