262985 has 8 divisors (see below), whose sum is σ = 318600. Its totient is φ = 208384.

The previous prime is 262981. The next prime is 263009. The reversal of 262985 is 589262.

It can be written as a sum of positive squares in 4 ways, for example, as 841 + 262144 = 29^2 + 512^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 262985 - 2² = 262981 is a prime.

It is a super-2 number, since 2×262985² = 138322220450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (262981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (39825).

2²⁶²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

262985 is a deficient number, since it is larger than the sum of its proper divisors (55615).

262985 is a wasteful number, since it uses less digits than its factorization.

262985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507.

The product of its digits is 8640, while the sum is 32.

The square root of 262985 is about 512.8206314102. The cubic root of 262985 is about 64.0683676957.

The spelling of 262985 in words is "two hundred sixty-two thousand, nine hundred eighty-five".