65668671 has 32 divisors (see below), whose sum is σ = 104371200. Its totient is φ = 40659840.

The previous prime is 65668661. The next prime is 65668717. The reversal of 65668671 is 17686656.

65668671 is a `hidden beast` number, since 6 + 566 + 86 + 7 + 1 = 666.

It is not a de Polignac number, because 65668671 - 2⁷ = 65668543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65668601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35356 + ... + 37166.

It is an arithmetic number, because the mean of its divisors is an integer number (3261600).

Almost surely, 2^65668671 is an apocalyptic number.

65668671 is a deficient number, since it is larger than the sum of its proper divisors (38702529).

65668671 is a wasteful number, since it uses less digits than its factorization.

65668671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1910 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 65668671 is about 8103.6208573699. The cubic root of 65668671 is about 403.4466147362.

The spelling of 65668671 in words is "sixty-five million, six hundred sixty-eight thousand, six hundred seventy-one".