71683912 has 8 divisors (see below), whose sum is σ = 134407350. Its totient is φ = 35841952.

The previous prime is 71683891. The next prime is 71683919. The reversal of 71683912 is 21938617.

It can be written as a sum of positive squares in only one way, i.e., 42588676 + 29095236 = 6526^2 + 5394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (71683919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4480237 + ... + 4480252.

Almost surely, 2^71683912 is an apocalyptic number.

It is an amenable number.

71683912 is a deficient number, since it is larger than the sum of its proper divisors (62723438).

71683912 is a wasteful number, since it uses less digits than its factorization.

71683912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960495 (or 8960491 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 71683912 is about 8466.6352230387. The cubic root of 71683912 is about 415.4070849440.

It can be divided in two parts, 716839 and 12, that multiplied together give a palindrome (8602068).

The spelling of 71683912 in words is "seventy-one million, six hundred eighty-three thousand, nine hundred twelve".