247606 has 4 divisors (see below), whose sum is σ = 371412. Its totient is φ = 123802.

The previous prime is 247603. The next prime is 247607. The reversal of 247606 is 606742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606742 = 2 ⋅303371.

It is a super-2 number, since 2×247606² = 122617462472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247601) 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 as a sum of consecutive naturals, namely, 61900 + ... + 61903.

It is an arithmetic number, because the mean of its divisors is an integer number (92853).

2²⁴⁷⁶⁰⁶ is an apocalyptic number.

247606 is a deficient number, since it is larger than the sum of its proper divisors (123806).

247606 is a wasteful number, since it uses less digits than its factorization.

247606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123805.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 247606 is about 497.6002411575. The cubic root of 247606 is about 62.7943238003.

The spelling of 247606 in words is "two hundred forty-seven thousand, six hundred six".