978135 has 16 divisors (see below), whose sum is σ = 1592160. Its totient is φ = 512640.

The previous prime is 978113. The next prime is 978149. The reversal of 978135 is 531879.

It is not a de Polignac number, because 978135 - 2⁶ = 978071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978096 and 978105.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978135.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (99510).

2⁹⁷⁸¹³⁵ is an apocalyptic number.

978135 is a deficient number, since it is larger than the sum of its proper divisors (614025).

978135 is a wasteful number, since it uses less digits than its factorization.

978135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138.

The product of its digits is 7560, while the sum is 33.

The square root of 978135 is about 989.0070778311. The cubic root of 978135 is about 99.2657892047.

The spelling of 978135 in words is "nine hundred seventy-eight thousand, one hundred thirty-five".