71671297 has 2 divisors, whose sum is σ = 71671298. Its totient is φ = 71671296.

The previous prime is 71671291. The next prime is 71671309. The reversal of 71671297 is 79217617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51609856 + 20061441 = 7184^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 71671297 - 2¹¹ = 71669249 is a prime.

It is not a weakly prime, because it can be changed into another prime (71671291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35835648 + 35835649.

It is an arithmetic number, because the mean of its divisors is an integer number (35835649).

Almost surely, 2^71671297 is an apocalyptic number.

It is an amenable number.

71671297 is a deficient number, since it is larger than the sum of its proper divisors (1).

71671297 is an equidigital number, since it uses as much as digits as its factorization.

71671297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 40.

The square root of 71671297 is about 8465.8902071785. The cubic root of 71671297 is about 415.3827156089.

It can be divided in two parts, 7167 and 1297, that added together give a square (8464 = 92²).

The spelling of 71671297 in words is "seventy-one million, six hundred seventy-one thousand, two hundred ninety-seven".