920745 has 48 divisors (see below), whose sum is σ = 1896960. Its totient is φ = 404352.

The previous prime is 920743. The next prime is 920753. The reversal of 920745 is 547029.

920745 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 920745 - 2¹ = 920743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (920741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11616 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (39520).

2⁹²⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

920745 is an abundant number, since it is smaller than the sum of its proper divisors (976215).

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

920745 is a wasteful number, since it uses less digits than its factorization.

920745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 920745 is about 959.5545841691. The cubic root of 920745 is about 97.2851283893.

The spelling of 920745 in words is "nine hundred twenty thousand, seven hundred forty-five".