71340461 has 4 divisors (see below), whose sum is σ = 72405312. Its totient is φ = 70275612.

The previous prime is 71340443. The next prime is 71340463. The reversal of 71340461 is 16404317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16404317 = 311 ⋅52747.

It is a cyclic number.

It is not a de Polignac number, because 71340461 - 2¹⁸ = 71078317 is a prime.

It is a super-2 number, since 2×71340461² = 10178922751385042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71340461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71340463) 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, 532325 + ... + 532458.

It is an arithmetic number, because the mean of its divisors is an integer number (18101328).

Almost surely, 2^71340461 is an apocalyptic number.

It is an amenable number.

71340461 is a deficient number, since it is larger than the sum of its proper divisors (1064851).

71340461 is a wasteful number, since it uses less digits than its factorization.

71340461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064850.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 71340461 is about 8446.3282555203. The cubic root of 71340461 is about 414.7425916185.

Adding to 71340461 its reverse (16404317), we get a palindrome (87744778).

The spelling of 71340461 in words is "seventy-one million, three hundred forty thousand, four hundred sixty-one".