71379677 has 2 divisors, whose sum is σ = 71379678. Its totient is φ = 71379676.

The previous prime is 71379667. The next prime is 71379683. The reversal of 71379677 is 77697317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47623801 + 23755876 = 6901^2 + 4874^2 .

It is an emirp because it is prime and its reverse (77697317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71379677 - 2¹⁰ = 71378653 is a 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 (71379667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35689838 + 35689839.

It is an arithmetic number, because the mean of its divisors is an integer number (35689839).

Almost surely, 2^71379677 is an apocalyptic number.

It is an amenable number.

71379677 is a deficient number, since it is larger than the sum of its proper divisors (1).

71379677 is an equidigital number, since it uses as much as digits as its factorization.

71379677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388962, while the sum is 47.

The square root of 71379677 is about 8448.6494186941. The cubic root of 71379677 is about 414.8185726534.

The spelling of 71379677 in words is "seventy-one million, three hundred seventy-nine thousand, six hundred seventy-seven".