260978 has 4 divisors (see below), whose sum is σ = 391470. Its totient is φ = 130488.

The previous prime is 260969. The next prime is 260983. The reversal of 260978 is 879062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 37249 = 473^2 + 193^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 65243 + ... + 65246.

2²⁶⁰⁹⁷⁸ is an apocalyptic number.

260978 is a deficient number, since it is larger than the sum of its proper divisors (130492).

260978 is a wasteful number, since it uses less digits than its factorization.

260978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130491.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 260978 is about 510.8600591160. The cubic root of 260978 is about 63.9049696412.

The spelling of 260978 in words is "two hundred sixty thousand, nine hundred seventy-eight".