247623 has 8 divisors (see below), whose sum is σ = 336000. Its totient is φ = 162168.

The previous prime is 247613. The next prime is 247633. The reversal of 247623 is 326742.

It is an interprime number because it is at equal distance from previous prime (247613) and next prime (247633).

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

It is not a de Polignac number, because 247623 - 2⁴ = 247607 is a prime.

It is a super-2 number, since 2×247623² = 122634300258, which contains 22 as substring.

247623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 247593 and 247602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523 + ... + 876.

It is an arithmetic number, because the mean of its divisors is an integer number (42000).

2²⁴⁷⁶²³ is an apocalyptic number.

247623 is a deficient number, since it is larger than the sum of its proper divisors (88377).

247623 is a wasteful number, since it uses less digits than its factorization.

247623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its digits is 2016, while the sum is 24.

The square root of 247623 is about 497.6173228496. The cubic root of 247623 is about 62.7957608671.

The spelling of 247623 in words is "two hundred forty-seven thousand, six hundred twenty-three".