247506 has 32 divisors (see below), whose sum is σ = 580608. Its totient is φ = 68880.

The previous prime is 247501. The next prime is 247519. The reversal of 247506 is 605742.

It is a happy number.

It is a super-2 number, since 2×247506² = 122518440072, which contains 22 as substring.

It is a nialpdrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247506.

It is not an unprimeable number, because it can be changed into a prime (247501) by changing a digit.

247506 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 in 15 ways as a sum of consecutive naturals, for example, 2941 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (18144).

2²⁴⁷⁵⁰⁶ is an apocalyptic number.

It is a pronic number, being equal to 497×498.

It is a practical number, because each smaller number is the sum of distinct divisors of 247506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290304).

247506 is an abundant number, since it is smaller than the sum of its proper divisors (333102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247506 is a wasteful number, since it uses less digits than its factorization.

247506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 247506 is about 497.4997487437. The cubic root of 247506 is about 62.7858691346.

The spelling of 247506 in words is "two hundred forty-seven thousand, five hundred six".