71740213 has 4 divisors (see below), whose sum is σ = 71769600. Its totient is φ = 71710828.

The previous prime is 71740177. The next prime is 71740261. The reversal of 71740213 is 31204717.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 71740213 - 2¹⁷ = 71609141 is a prime.

It is a super-2 number, since 2×71740213² = 10293316322570738, 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 (71741213) 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 3 ways as a sum of consecutive naturals, for example, 10663 + ... + 16036.

It is an arithmetic number, because the mean of its divisors is an integer number (17942400).

Almost surely, 2^71740213 is an apocalyptic number.

It is an amenable number.

71740213 is a deficient number, since it is larger than the sum of its proper divisors (29387).

71740213 is a wasteful number, since it uses less digits than its factorization.

71740213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29386.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 71740213 is about 8469.9594450033. The cubic root of 71740213 is about 415.5158109390.

The spelling of 71740213 in words is "seventy-one million, seven hundred forty thousand, two hundred thirteen".