71140069 has 16 divisors (see below), whose sum is σ = 95518080. Its totient is φ = 51168960.

The previous prime is 71140063. The next prime is 71140079. The reversal of 71140069 is 96004117.

It is a cyclic number.

It is not a de Polignac number, because 71140069 - 2¹¹ = 71138021 is a prime.

It is a super-2 number, since 2×71140069² = 10121818834649522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71140063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34534 + ... + 36535.

It is an arithmetic number, because the mean of its divisors is an integer number (5969880).

Almost surely, 2^71140069 is an apocalyptic number.

It is an amenable number.

71140069 is a deficient number, since it is larger than the sum of its proper divisors (24378011).

71140069 is a wasteful number, since it uses less digits than its factorization.

71140069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71100.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 71140069 is about 8434.4572439488. The cubic root of 71140069 is about 414.3538966372.

The spelling of 71140069 in words is "seventy-one million, one hundred forty thousand, sixty-nine".