945865 has 8 divisors (see below), whose sum is σ = 1146888. Its totient is φ = 748800.

The previous prime is 945851. The next prime is 945881. The reversal of 945865 is 568549.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 861184 = 291^2 + 928^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-945865 is a prime.

It is a Duffinian number.

945865 is a lucky 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, 432 + ... + 1441.

It is an arithmetic number, because the mean of its divisors is an integer number (143361).

2⁹⁴⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

945865 is a deficient number, since it is larger than the sum of its proper divisors (201023).

945865 is a wasteful number, since it uses less digits than its factorization.

945865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979.

The product of its digits is 43200, while the sum is 37.

The square root of 945865 is about 972.5559109892. Note that the first 3 decimals coincide. The cubic root of 945865 is about 98.1619216811.

The spelling of 945865 in words is "nine hundred forty-five thousand, eight hundred sixty-five".