265478 has 4 divisors (see below), whose sum is σ = 398220. Its totient is φ = 132738.

The previous prime is 265471. The next prime is 265483. The reversal of 265478 is 874562.

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

It is a d-powerful number, because it can be written as 2⁸ + 6² + 4² + 5⁴ + 7⁴ + 8⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265471) by changing a digit.

265478 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 as a sum of consecutive naturals, namely, 66368 + ... + 66371.

It is an arithmetic number, because the mean of its divisors is an integer number (99555).

2²⁶⁵⁴⁷⁸ is an apocalyptic number.

265478 is a deficient number, since it is larger than the sum of its proper divisors (132742).

265478 is a wasteful number, since it uses less digits than its factorization.

265478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132741.

The product of its digits is 13440, while the sum is 32.

The square root of 265478 is about 515.2455725186. The cubic root of 265478 is about 64.2701794326.

The spelling of 265478 in words is "two hundred sixty-five thousand, four hundred seventy-eight".