247673 has 6 divisors (see below), whose sum is σ = 263406. Its totient is φ = 232832.

The previous prime is 247651. The next prime is 247691. The reversal of 247673 is 376742.

It can be written as a sum of positive squares in 3 ways, for example, as 162409 + 85264 = 403^2 + 292^2 .

It is not a de Polignac number, because 247673 - 2⁶ = 247609 is a prime.

It is a super-2 number, since 2×247673² = 122683829858, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹³ + 4⁶ + 6 + 7⁶ + 7⁶ + 3⁴ .

It is a Duffinian number.

It is a Curzon number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (43901).

2²⁴⁷⁶⁷³ is an apocalyptic number.

It is an amenable number.

247673 is a deficient number, since it is larger than the sum of its proper divisors (15733).

247673 is an equidigital number, since it uses as much as digits as its factorization.

247673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 874 counting only the distinct ones).

The product of its digits is 7056, while the sum is 29.

The square root of 247673 is about 497.6675597224. The cubic root of 247673 is about 62.7999871530.

The spelling of 247673 in words is "two hundred forty-seven thousand, six hundred seventy-three".