260638 has 8 divisors (see below), whose sum is σ = 446832. Its totient is φ = 111696.

The previous prime is 260629. The next prime is 260647. The reversal of 260638 is 836062.

It is an interprime number because it is at equal distance from previous prime (260629) and next prime (260647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

260638 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, 9295 + ... + 9322.

It is an arithmetic number, because the mean of its divisors is an integer number (55854).

2²⁶⁰⁶³⁸ is an apocalyptic number.

260638 is a deficient number, since it is larger than the sum of its proper divisors (186194).

260638 is a wasteful number, since it uses less digits than its factorization.

260638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18626.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 260638 is about 510.5271785126. The cubic root of 260638 is about 63.8772059573.

It can be divided in two parts, 260 and 638, that added together give a palindrome (898).

The spelling of 260638 in words is "two hundred sixty thousand, six hundred thirty-eight".