73847 has 2 divisors, whose sum is σ = 73848. Its totient is φ = 73846.

The previous prime is 73823. The next prime is 73849. The reversal of 73847 is 74837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73847 - 2⁶ = 73783 is a prime.

Together with 73849, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36923 + 36924.

It is an arithmetic number, because the mean of its divisors is an integer number (36924).

2⁷³⁸⁴⁷ is an apocalyptic number.

73847 is a deficient number, since it is larger than the sum of its proper divisors (1).

73847 is an equidigital number, since it uses as much as digits as its factorization.

73847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 73847 is about 271.7480450712. The cubic root of 73847 is about 41.9544100928.

Subtracting 73847 from its reverse (74837), we obtain a triangular number (990 = T₄₄).

The spelling of 73847 in words is "seventy-three thousand, eight hundred forty-seven".