775385 has 16 divisors (see below), whose sum is σ = 1021440. Its totient is φ = 561600.

The previous prime is 775367. The next prime is 775393. The reversal of 775385 is 583577.

775385 = 3² + 4² + ... + 132².

It is not a de Polignac number, because 775385 - 2¹² = 771289 is a prime.

It is a Curzon 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, 5060 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2⁷⁷⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

775385 is a deficient number, since it is larger than the sum of its proper divisors (246055).

775385 is a wasteful number, since it uses less digits than its factorization.

775385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248.

The product of its digits is 29400, while the sum is 35.

The square root of 775385 is about 880.5594812391. The cubic root of 775385 is about 91.8697353023.

The spelling of 775385 in words is "seven hundred seventy-five thousand, three hundred eighty-five".