264401 has 8 divisors (see below), whose sum is σ = 284544. Its totient is φ = 244800.

The previous prime is 264391. The next prime is 264403. The reversal of 264401 is 104462.

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

It is a de Polignac number, because none of the positive numbers 2^k-264401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 264401.

It is not an unprimeable number, because it can be changed into a prime (264403) 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, 1676 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (35568).

2²⁶⁴⁴⁰¹ is an apocalyptic number.

It is an amenable number.

264401 is a deficient number, since it is larger than the sum of its proper divisors (20143).

264401 is a wasteful number, since it uses less digits than its factorization.

264401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 264401 is about 514.1993776737. The cubic root of 264401 is about 64.1831505036.

Adding to 264401 its reverse (104462), we get a palindrome (368863).

The spelling of 264401 in words is "two hundred sixty-four thousand, four hundred one".