264381 has 8 divisors (see below), whose sum is σ = 379680. Its totient is φ = 162672.

The previous prime is 264371. The next prime is 264391. The reversal of 264381 is 183462.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (264371) and next prime (264391).

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

It is not a de Polignac number, because 264381 - 2⁵ = 264349 is a prime.

It is a super-2 number, since 2×264381² = 139794626322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264301) 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, 3351 + ... + 3428.

It is an arithmetic number, because the mean of its divisors is an integer number (47460).

2²⁶⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

264381 is a deficient number, since it is larger than the sum of its proper divisors (115299).

264381 is a wasteful number, since it uses less digits than its factorization.

264381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795.

The product of its digits is 1152, while the sum is 24.

The square root of 264381 is about 514.1799295966. The cubic root of 264381 is about 64.1815321343.

The spelling of 264381 in words is "two hundred sixty-four thousand, three hundred eighty-one".