978245 has 8 divisors (see below), whose sum is σ = 1186584. Its totient is φ = 774144.

The previous prime is 978239. The next prime is 978269. The reversal of 978245 is 542879.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 214369 + 763876 = 463^2 + 874^2 .

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 978245 - 2⁶ = 978181 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, 524 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (148323).

2⁹⁷⁸²⁴⁵ is an apocalyptic number.

It is an amenable number.

978245 is a deficient number, since it is larger than the sum of its proper divisors (208339).

978245 is a wasteful number, since it uses less digits than its factorization.

978245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119.

The product of its digits is 20160, while the sum is 35.

The square root of 978245 is about 989.0626875987. The cubic root of 978245 is about 99.2695101728.

The spelling of 978245 in words is "nine hundred seventy-eight thousand, two hundred forty-five".