920005 has 8 divisors (see below), whose sum is σ = 1134072. Its totient is φ = 715968.

The previous prime is 919979. The next prime is 920011. The reversal of 920005 is 500029.

It can be written as a sum of positive squares in 4 ways, for example, as 314721 + 605284 = 561^2 + 778^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 920005 - 2¹⁷ = 788933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302 + ... + 2671.

It is an arithmetic number, because the mean of its divisors is an integer number (141759).

2⁹²⁰⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

920005 is a deficient number, since it is larger than the sum of its proper divisors (214067).

920005 is a wasteful number, since it uses less digits than its factorization.

920005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 920005 is about 959.1689110892. The cubic root of 920005 is about 97.2590588152.

The spelling of 920005 in words is "nine hundred twenty thousand, five".