71684023 has 2 divisors, whose sum is σ = 71684024. Its totient is φ = 71684022.

The previous prime is 71684021. The next prime is 71684051. The reversal of 71684023 is 32048617.

It is a weak prime.

It is an emirp because it is prime and its reverse (32048617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71684023 - 2¹ = 71684021 is a prime.

Together with 71684021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71684021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35842011 + 35842012.

It is an arithmetic number, because the mean of its divisors is an integer number (35842012).

Almost surely, 2^71684023 is an apocalyptic number.

71684023 is a deficient number, since it is larger than the sum of its proper divisors (1).

71684023 is an equidigital number, since it uses as much as digits as its factorization.

71684023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 71684023 is about 8466.6417781786. The cubic root of 71684023 is about 415.4072993583.

The spelling of 71684023 in words is "seventy-one million, six hundred eighty-four thousand, twenty-three".