920818 has 4 divisors (see below), whose sum is σ = 1381230. Its totient is φ = 460408.

The previous prime is 920807. The next prime is 920827. The reversal of 920818 is 818029.

920818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818029 = 269 ⋅3041.

It can be written as a sum of positive squares in only one way, i.e., 877969 + 42849 = 937^2 + 207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230203 + ... + 230206.

2⁹²⁰⁸¹⁸ is an apocalyptic number.

920818 is a deficient number, since it is larger than the sum of its proper divisors (460412).

920818 is a wasteful number, since it uses less digits than its factorization.

920818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460411.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 920818 is about 959.5926218974. The cubic root of 920818 is about 97.2876993605.

The spelling of 920818 in words is "nine hundred twenty thousand, eight hundred eighteen".