71750947 has 2 divisors, whose sum is σ = 71750948. Its totient is φ = 71750946.

The previous prime is 71750941. The next prime is 71750951. The reversal of 71750947 is 74905717.

It is a strong prime.

It is an emirp because it is prime and its reverse (74905717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71750947 - 2¹¹ = 71748899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71750941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35875473 + 35875474.

It is an arithmetic number, because the mean of its divisors is an integer number (35875474).

Almost surely, 2^71750947 is an apocalyptic number.

71750947 is a deficient number, since it is larger than the sum of its proper divisors (1).

71750947 is an equidigital number, since it uses as much as digits as its factorization.

71750947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 71750947 is about 8470.5930725068. The cubic root of 71750947 is about 415.5365335068.

The spelling of 71750947 in words is "seventy-one million, seven hundred fifty thousand, nine hundred forty-seven".