71671337 has 8 divisors (see below), whose sum is σ = 76021416. Its totient is φ = 67336192.

The previous prime is 71671309. The next prime is 71671351. The reversal of 71671337 is 73317617.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32041 + 71639296 = 179^2 + 8464^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71671337 - 2⁶ = 71671273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71671297 and 71671306.

It is not an unprimeable number, because it can be changed into a prime (71671387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7073 + ... + 13905.

It is an arithmetic number, because the mean of its divisors is an integer number (9502677).

Almost surely, 2^71671337 is an apocalyptic number.

It is an amenable number.

71671337 is a deficient number, since it is larger than the sum of its proper divisors (4350079).

71671337 is a wasteful number, since it uses less digits than its factorization.

71671337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7467.

The product of its digits is 18522, while the sum is 35.

The square root of 71671337 is about 8465.8925695995. The cubic root of 71671337 is about 415.3827928844.

The spelling of 71671337 in words is "seventy-one million, six hundred seventy-one thousand, three hundred thirty-seven".