71755679 has 2 divisors, whose sum is σ = 71755680. Its totient is φ = 71755678.

The previous prime is 71755633. The next prime is 71755709. The reversal of 71755679 is 97655717.

It is a strong prime.

It is an emirp because it is prime and its reverse (97655717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71755679 - 2¹² = 71751583 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71752679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35877839 + 35877840.

It is an arithmetic number, because the mean of its divisors is an integer number (35877840).

Almost surely, 2^71755679 is an apocalyptic number.

71755679 is a deficient number, since it is larger than the sum of its proper divisors (1).

71755679 is an equidigital number, since it uses as much as digits as its factorization.

71755679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 463050, while the sum is 47.

The square root of 71755679 is about 8470.8723871866. The cubic root of 71755679 is about 415.5456682325.

The spelling of 71755679 in words is "seventy-one million, seven hundred fifty-five thousand, six hundred seventy-nine".