262397 has 4 divisors (see below), whose sum is σ = 263676. Its totient is φ = 261120.

The previous prime is 262391. The next prime is 262399. The reversal of 262397 is 793262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793262 = 2 ⋅396631.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 42436 = 469^2 + 206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (262391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (65919).

2²⁶²³⁹⁷ is an apocalyptic number.

It is an amenable number.

262397 is a deficient number, since it is larger than the sum of its proper divisors (1279).

262397 is a wasteful number, since it uses less digits than its factorization.

262397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its digits is 4536, while the sum is 29.

The square root of 262397 is about 512.2470107282. The cubic root of 262397 is about 64.0205825726.

The spelling of 262397 in words is "two hundred sixty-two thousand, three hundred ninety-seven".