71681363 has 8 divisors (see below), whose sum is σ = 80551968. Its totient is φ = 63290304.

The previous prime is 71681341. The next prime is 71681377. The reversal of 71681363 is 36318617.

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 71681363 - 2¹⁸ = 71419219 is a prime.

It is a super-3 number, since 3×71681363³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71681303) 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, 119570 + ... + 120167.

It is an arithmetic number, because the mean of its divisors is an integer number (10068996).

Almost surely, 2^71681363 is an apocalyptic number.

71681363 is a deficient number, since it is larger than the sum of its proper divisors (8870605).

71681363 is a wasteful number, since it uses less digits than its factorization.

71681363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239773.

The product of its digits is 18144, while the sum is 35.

The square root of 71681363 is about 8466.4846896454. The cubic root of 71681363 is about 415.4021610813.

The spelling of 71681363 in words is "seventy-one million, six hundred eighty-one thousand, three hundred sixty-three".