71940727 has 2 divisors, whose sum is σ = 71940728. Its totient is φ = 71940726.

The previous prime is 71940721. The next prime is 71940731. The reversal of 71940727 is 72704917.

It is a strong prime.

It is an emirp because it is prime and its reverse (72704917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71940727 - 2⁷ = 71940599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71940721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35970363 + 35970364.

It is an arithmetic number, because the mean of its divisors is an integer number (35970364).

Almost surely, 2^71940727 is an apocalyptic number.

71940727 is a deficient number, since it is larger than the sum of its proper divisors (1).

71940727 is an equidigital number, since it uses as much as digits as its factorization.

71940727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 71940727 is about 8481.7879600943. The cubic root of 71940727 is about 415.9025732613.

The spelling of 71940727 in words is "seventy-one million, nine hundred forty thousand, seven hundred twenty-seven".