71618441 has 2 divisors, whose sum is σ = 71618442. Its totient is φ = 71618440.

The previous prime is 71618419. The next prime is 71618461. The reversal of 71618441 is 14481617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52258441 + 19360000 = 7229^2 + 4400^2 .

It is an emirp because it is prime and its reverse (14481617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71618441 - 2¹⁰ = 71617417 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71618398 and 71618407.

It is not a weakly prime, because it can be changed into another prime (71618461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35809220 + 35809221.

It is an arithmetic number, because the mean of its divisors is an integer number (35809221).

Almost surely, 2^71618441 is an apocalyptic number.

It is an amenable number.

71618441 is a deficient number, since it is larger than the sum of its proper divisors (1).

71618441 is an equidigital number, since it uses as much as digits as its factorization.

71618441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 71618441 is about 8462.7679278118. The cubic root of 71618441 is about 415.2805786347.

The spelling of 71618441 in words is "seventy-one million, six hundred eighteen thousand, four hundred forty-one".