71874013 has 2 divisors, whose sum is σ = 71874014. Its totient is φ = 71874012.

The previous prime is 71874007. The next prime is 71874031. The reversal of 71874013 is 31047817.

Together with next prime (71874031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53538489 + 18335524 = 7317^2 + 4282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71874013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71874073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35937006 + 35937007.

It is an arithmetic number, because the mean of its divisors is an integer number (35937007).

Almost surely, 2^71874013 is an apocalyptic number.

It is an amenable number.

71874013 is a deficient number, since it is larger than the sum of its proper divisors (1).

71874013 is an equidigital number, since it uses as much as digits as its factorization.

71874013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 71874013 is about 8477.8542686225. The cubic root of 71874013 is about 415.7739715326.

The spelling of 71874013 in words is "seventy-one million, eight hundred seventy-four thousand, thirteen".