71654971 has 2 divisors, whose sum is σ = 71654972. Its totient is φ = 71654970.

The previous prime is 71654951. The next prime is 71655013. The reversal of 71654971 is 17945617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71654971 - 2¹¹ = 71652923 is a prime.

It is not a weakly prime, because it can be changed into another prime (71654951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35827485 + 35827486.

It is an arithmetic number, because the mean of its divisors is an integer number (35827486).

Almost surely, 2^71654971 is an apocalyptic number.

71654971 is a deficient number, since it is larger than the sum of its proper divisors (1).

71654971 is an equidigital number, since it uses as much as digits as its factorization.

71654971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 40.

The square root of 71654971 is about 8464.9259299772. The cubic root of 71654971 is about 415.3511732134.

The spelling of 71654971 in words is "seventy-one million, six hundred fifty-four thousand, nine hundred seventy-one".