71140066 has 16 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 33430320.

The previous prime is 71140063. The next prime is 71140079. The reversal of 71140066 is 66004117.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71140066.

It is not an unprimeable number, because it can be changed into a prime (71140063) 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, 2545 + ... + 12196.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^71140066 is an apocalyptic number.

71140066 is a deficient number, since it is larger than the sum of its proper divisors (42078494).

71140066 is a wasteful number, since it uses less digits than its factorization.

71140066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14889.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71140066 is about 8434.4570661069. The cubic root of 71140066 is about 414.3538908127.

The spelling of 71140066 in words is "seventy-one million, one hundred forty thousand, sixty-six".