978265 has 12 divisors (see below), whose sum is σ = 1248876. Its totient is φ = 735488.

The previous prime is 978239. The next prime is 978269. The reversal of 978265 is 562879.

It can be written as a sum of positive squares in 6 ways, for example, as 292681 + 685584 = 541^2 + 828^2 .

It is not a de Polignac number, because 978265 - 2⁵ = 978233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978269) 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 11 ways as a sum of consecutive naturals, for example, 1107 + ... + 1783.

It is an arithmetic number, because the mean of its divisors is an integer number (104073).

2⁹⁷⁸²⁶⁵ is an apocalyptic number.

It is an amenable number.

978265 is a deficient number, since it is larger than the sum of its proper divisors (270611).

978265 is a wasteful number, since it uses less digits than its factorization.

978265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 699 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 978265 is about 989.0727981296. The cubic root of 978265 is about 99.2701866825.

The spelling of 978265 in words is "nine hundred seventy-eight thousand, two hundred sixty-five".