71680459 has 2 divisors, whose sum is σ = 71680460. Its totient is φ = 71680458.

The previous prime is 71680421. The next prime is 71680487. The reversal of 71680459 is 95408617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71680459 - 2²¹ = 69583307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71680409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35840229 + 35840230.

It is an arithmetic number, because the mean of its divisors is an integer number (35840230).

Almost surely, 2^71680459 is an apocalyptic number.

71680459 is a deficient number, since it is larger than the sum of its proper divisors (1).

71680459 is an equidigital number, since it uses as much as digits as its factorization.

71680459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 71680459 is about 8466.4313025028. The cubic root of 71680459 is about 415.4004148109.

The spelling of 71680459 in words is "seventy-one million, six hundred eighty thousand, four hundred fifty-nine".