71361329 has 4 divisors (see below), whose sum is σ = 76850676. Its totient is φ = 65871984.

The previous prime is 71361317. The next prime is 71361331. The reversal of 71361329 is 92316317.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 44528929 = 5180^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 71361329 - 2¹⁶ = 71295793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71361295 and 71361304.

It is not an unprimeable number, because it can be changed into a prime (71364329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2744654 + ... + 2744679.

It is an arithmetic number, because the mean of its divisors is an integer number (19212669).

Almost surely, 2^71361329 is an apocalyptic number.

It is an amenable number.

71361329 is a deficient number, since it is larger than the sum of its proper divisors (5489347).

71361329 is a wasteful number, since it uses less digits than its factorization.

71361329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5489346.

The product of its digits is 6804, while the sum is 32.

The square root of 71361329 is about 8447.5634948783. The cubic root of 71361329 is about 414.7830268523.

The spelling of 71361329 in words is "seventy-one million, three hundred sixty-one thousand, three hundred twenty-nine".