978475 has 6 divisors (see below), whose sum is σ = 1213340. Its totient is φ = 782760.

The previous prime is 978473. The next prime is 978479. The reversal of 978475 is 574879.

It is not a de Polignac number, because 978475 - 2¹ = 978473 is a prime.

978475 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (978473) 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 5 ways as a sum of consecutive naturals, for example, 19545 + ... + 19594.

2⁹⁷⁸⁴⁷⁵ is an apocalyptic number.

978475 is a deficient number, since it is larger than the sum of its proper divisors (234865).

978475 is a wasteful number, since it uses less digits than its factorization.

978475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39149 (or 39144 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 978475 is about 989.1789524651. The cubic root of 978475 is about 99.2772894777.

The spelling of 978475 in words is "nine hundred seventy-eight thousand, four hundred seventy-five".