71727469 has 12 divisors (see below), whose sum is σ = 81563580. Its totient is φ = 62955200.

The previous prime is 71727463. The next prime is 71727493. The reversal of 71727469 is 96472717.

It can be written as a sum of positive squares in 2 ways, for example, as 49871844 + 21855625 = 7062^2 + 4675^2 .

It is not a de Polignac number, because 71727469 - 2¹¹ = 71725421 is a prime.

It is a super-2 number, since 2×71727469² = 10289659618291922, 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 (71727463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6712 + ... + 13729.

It is an arithmetic number, because the mean of its divisors is an integer number (6796965).

Almost surely, 2^71727469 is an apocalyptic number.

It is an amenable number.

71727469 is a deficient number, since it is larger than the sum of its proper divisors (9836111).

71727469 is a wasteful number, since it uses less digits than its factorization.

71727469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20492 (or 20481 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 71727469 is about 8469.2071057449. The cubic root of 71727469 is about 415.4912052734.

It can be divided in two parts, 7172 and 7469, that added together give a palindrome (14641).

The spelling of 71727469 in words is "seventy-one million, seven hundred twenty-seven thousand, four hundred sixty-nine".