71668041 has 16 divisors (see below), whose sum is σ = 98427840. Its totient is φ = 46356480.

The previous prime is 71668021. The next prime is 71668043. The reversal of 71668041 is 14086617.

It is a happy number.

It is not a de Polignac number, because 71668041 - 2¹⁵ = 71635273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71667993 and 71668011.

It is not an unprimeable number, because it can be changed into a prime (71668043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22230 + ... + 25248.

It is an arithmetic number, because the mean of its divisors is an integer number (6151740).

Almost surely, 2^71668041 is an apocalyptic number.

It is an amenable number.

71668041 is a deficient number, since it is larger than the sum of its proper divisors (26759799).

71668041 is a wasteful number, since it uses less digits than its factorization.

71668041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 71668041 is about 8465.6979038943. The cubic root of 71668041 is about 415.3764252870.

The spelling of 71668041 in words is "seventy-one million, six hundred sixty-eight thousand, forty-one".