71223968 has 12 divisors (see below), whose sum is σ = 140222250. Its totient is φ = 35611968.

The previous prime is 71223967. The next prime is 71224009. The reversal of 71223968 is 86932217.

It can be written as a sum of positive squares in only one way, i.e., 48832144 + 22391824 = 6988^2 + 4732^2 .

It is not an unprimeable number, because it can be changed into a prime (71223961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112843 + ... + 1112906.

Almost surely, 2^71223968 is an apocalyptic number.

It is an amenable number.

71223968 is a deficient number, since it is larger than the sum of its proper divisors (68998282).

71223968 is a wasteful number, since it uses less digits than its factorization.

71223968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225759 (or 2225751 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 71223968 is about 8439.4293645957. The cubic root of 71223968 is about 414.5167219889.

The spelling of 71223968 in words is "seventy-one million, two hundred twenty-three thousand, nine hundred sixty-eight".