71823793 has 8 divisors (see below), whose sum is σ = 76251240. Its totient is φ = 67418880.

The previous prime is 71823769. The next prime is 71823809. The reversal of 71823793 is 39732817.

It can be written as a sum of positive squares in 4 ways, for example, as 8334769 + 63489024 = 2887^2 + 7968^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71823793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71823293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183 + ... + 12043.

It is an arithmetic number, because the mean of its divisors is an integer number (9531405).

Almost surely, 2^71823793 is an apocalyptic number.

It is an amenable number.

71823793 is a deficient number, since it is larger than the sum of its proper divisors (4427447).

71823793 is a wasteful number, since it uses less digits than its factorization.

71823793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267.

The product of its digits is 63504, while the sum is 40.

The square root of 71823793 is about 8474.8919167149. The cubic root of 71823793 is about 415.6771120743.

The spelling of 71823793 in words is "seventy-one million, eight hundred twenty-three thousand, seven hundred ninety-three".