775005 has 48 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 316800.

The previous prime is 774997. The next prime is 775007. The reversal of 775005 is 500577.

775005 = 11² + 12² + ... + 132².

It is not a de Polignac number, because 775005 - 2³ = 774997 is a prime.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

775005 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775007) 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 47 ways as a sum of consecutive naturals, for example, 12675 + ... + 12735.

It is an arithmetic number, because the mean of its divisors is an integer number (32984).

2⁷⁷⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

775005 is an abundant number, since it is smaller than the sum of its proper divisors (808227).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775005 is a wasteful number, since it uses less digits than its factorization.

775005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 775005 is about 880.3436828875. The cubic root of 775005 is about 91.8547250369.

The spelling of 775005 in words is "seven hundred seventy-five thousand, five".