247674013 has 4 divisors (see below), whose sum is σ = 248701948. Its totient is φ = 246646080.

The previous prime is 247673983. The next prime is 247674017. The reversal of 247674013 is 310476742.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126630009 + 121044004 = 11253^2 + 11002^2 .

It is a cyclic number.

It is not a de Polignac number, because 247674013 - 2⁵ = 247673981 is a prime.

It is a super-2 number, since 2×247674013² = 122684833431048338, which contains 22 as substring.

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 247674013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247674017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513606 + ... + 514087.

It is an arithmetic number, because the mean of its divisors is an integer number (62175487).

Almost surely, 2^247674013 is an apocalyptic number.

It is an amenable number.

247674013 is a deficient number, since it is larger than the sum of its proper divisors (1027935).

247674013 is a wasteful number, since it uses less digits than its factorization.

247674013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027934.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 247674013 is about 15737.6622469794. The cubic root of 247674013 is about 628.0007277163. Note that the first 3 decimals are identical.

The spelling of 247674013 in words is "two hundred forty-seven million, six hundred seventy-four thousand, thirteen".