71350681 has 4 divisors (see below), whose sum is σ = 75106000. Its totient is φ = 67595364.

The previous prime is 71350673. The next prime is 71350693. The reversal of 71350681 is 18605317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18605317 = 2221 ⋅8377.

It is a cyclic number.

It is not a de Polignac number, because 71350681 - 2³ = 71350673 is a prime.

It is a super-2 number, since 2×71350681² = 10181839358327522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71350621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1877631 + ... + 1877668.

It is an arithmetic number, because the mean of its divisors is an integer number (18776500).

Almost surely, 2^71350681 is an apocalyptic number.

It is an amenable number.

71350681 is a deficient number, since it is larger than the sum of its proper divisors (3755319).

71350681 is a wasteful number, since it uses less digits than its factorization.

71350681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3755318.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71350681 is about 8446.9332304689. The cubic root of 71350681 is about 414.7623955598.

Adding to 71350681 its reverse (18605317), we get a palindrome (89955998).

The spelling of 71350681 in words is "seventy-one million, three hundred fifty thousand, six hundred eighty-one".