71821796 has 6 divisors (see below), whose sum is σ = 125688150. Its totient is φ = 35910896.

The previous prime is 71821769. The next prime is 71821811. The reversal of 71821796 is 69712817.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 29311396 = 6520^2 + 5414^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8977721 + ... + 8977728.

It is an arithmetic number, because the mean of its divisors is an integer number (20948025).

Almost surely, 2^71821796 is an apocalyptic number.

It is an amenable number.

71821796 is a deficient number, since it is larger than the sum of its proper divisors (53866354).

71821796 is a wasteful number, since it uses less digits than its factorization.

71821796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17955453 (or 17955451 counting only the distinct ones).

The product of its digits is 42336, while the sum is 41.

The square root of 71821796 is about 8474.7740972842. The cubic root of 71821796 is about 415.6732595214.

The spelling of 71821796 in words is "seventy-one million, eight hundred twenty-one thousand, seven hundred ninety-six".