71969371 has 2 divisors, whose sum is σ = 71969372. Its totient is φ = 71969370.

The previous prime is 71969333. The next prime is 71969399. The reversal of 71969371 is 17396917.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71969371 - 2⁷ = 71969243 is a prime.

It is not a weakly prime, because it can be changed into another prime (71969311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35984685 + 35984686.

It is an arithmetic number, because the mean of its divisors is an integer number (35984686).

Almost surely, 2^71969371 is an apocalyptic number.

71969371 is a deficient number, since it is larger than the sum of its proper divisors (1).

71969371 is an equidigital number, since it uses as much as digits as its factorization.

71969371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 43.

The square root of 71969371 is about 8483.4763511193. The cubic root of 71969371 is about 415.9577646809.

The spelling of 71969371 in words is "seventy-one million, nine hundred sixty-nine thousand, three hundred seventy-one".