978632 has 16 divisors (see below), whose sum is σ = 1849500. Its totient is φ = 485440.

The previous prime is 978619. The next prime is 978643. The reversal of 978632 is 236879.

It can be written as a sum of positive squares in 2 ways, for example, as 872356 + 106276 = 934^2 + 326^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 978592 and 978601.

It is an unprimeable number.

978632 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782 + ... + 1602.

2⁹⁷⁸⁶³² is an apocalyptic number.

It is an amenable number.

978632 is a deficient number, since it is larger than the sum of its proper divisors (870868).

978632 is a wasteful number, since it uses less digits than its factorization.

978632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 972 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 978632 is about 989.2583080268. The cubic root of 978632 is about 99.2825989987.

The spelling of 978632 in words is "nine hundred seventy-eight thousand, six hundred thirty-two".