71879461 has 2 divisors, whose sum is σ = 71879462. Its totient is φ = 71879460.

The previous prime is 71879459. The next prime is 71879491. The reversal of 71879461 is 16497817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36844900 + 35034561 = 6070^2 + 5919^2 .

It is a cyclic number.

It is not a de Polignac number, because 71879461 - 2¹ = 71879459 is a prime.

Together with 71879459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71879491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35939730 + 35939731.

It is an arithmetic number, because the mean of its divisors is an integer number (35939731).

Almost surely, 2^71879461 is an apocalyptic number.

It is an amenable number.

71879461 is a deficient number, since it is larger than the sum of its proper divisors (1).

71879461 is an equidigital number, since it uses as much as digits as its factorization.

71879461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 71879461 is about 8478.1755702509. The cubic root of 71879461 is about 415.7844763928.

The spelling of 71879461 in words is "seventy-one million, eight hundred seventy-nine thousand, four hundred sixty-one".