71892743 has 4 divisors (see below), whose sum is σ = 77422968. Its totient is φ = 66362520.

The previous prime is 71892703. The next prime is 71892749. The reversal of 71892743 is 34729817.

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

It is a cyclic number.

It is not a de Polignac number, because 71892743 - 2⁶ = 71892679 is a prime.

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 71892743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71892749) 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, 2765093 + ... + 2765118.

It is an arithmetic number, because the mean of its divisors is an integer number (19355742).

Almost surely, 2^71892743 is an apocalyptic number.

71892743 is a deficient number, since it is larger than the sum of its proper divisors (5530225).

71892743 is a wasteful number, since it uses less digits than its factorization.

71892743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530224.

The product of its digits is 84672, while the sum is 41.

The square root of 71892743 is about 8478.9588393859. The cubic root of 71892743 is about 415.8100845856.

The spelling of 71892743 in words is "seventy-one million, eight hundred ninety-two thousand, seven hundred forty-three".