71358761 has 2 divisors, whose sum is σ = 71358762. Its totient is φ = 71358760.

The previous prime is 71358757. The next prime is 71358769. The reversal of 71358761 is 16785317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65108761 + 6250000 = 8069^2 + 2500^2 .

It is an emirp because it is prime and its reverse (16785317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71358761 - 2² = 71358757 is a prime.

It is not a weakly prime, because it can be changed into another prime (71358769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35679380 + 35679381.

It is an arithmetic number, because the mean of its divisors is an integer number (35679381).

Almost surely, 2^71358761 is an apocalyptic number.

It is an amenable number.

71358761 is a deficient number, since it is larger than the sum of its proper divisors (1).

71358761 is an equidigital number, since it uses as much as digits as its factorization.

71358761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 71358761 is about 8447.4114970208. The cubic root of 71358761 is about 414.7780513490.

The spelling of 71358761 in words is "seventy-one million, three hundred fifty-eight thousand, seven hundred sixty-one".