71164469 has 4 divisors (see below), whose sum is σ = 71207820. Its totient is φ = 71121120.

The previous prime is 71164427. The next prime is 71164487. The reversal of 71164469 is 96446117.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49420900 + 21743569 = 7030^2 + 4663^2 .

It is a cyclic number.

It is not a de Polignac number, because 71164469 - 2¹⁶ = 71098933 is a prime.

It is a super-2 number, since 2×71164469² = 10128763296103922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71164409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19112 + ... + 22529.

It is an arithmetic number, because the mean of its divisors is an integer number (17801955).

Almost surely, 2^71164469 is an apocalyptic number.

It is an amenable number.

71164469 is a deficient number, since it is larger than the sum of its proper divisors (43351).

71164469 is a wasteful number, since it uses less digits than its factorization.

71164469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43350.

The product of its digits is 36288, while the sum is 38.

The square root of 71164469 is about 8435.9035674906. The cubic root of 71164469 is about 414.4012636581.

The spelling of 71164469 in words is "seventy-one million, one hundred sixty-four thousand, four hundred sixty-nine".