71030612 has 6 divisors (see below), whose sum is σ = 124303578. Its totient is φ = 35515304.

The previous prime is 71030593. The next prime is 71030623. The reversal of 71030612 is 21603017.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36409156 + 34621456 = 6034^2 + 5884^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8878823 + ... + 8878830.

It is an arithmetic number, because the mean of its divisors is an integer number (20717263).

Almost surely, 2^71030612 is an apocalyptic number.

It is an amenable number.

71030612 is a deficient number, since it is larger than the sum of its proper divisors (53272966).

71030612 is a wasteful number, since it uses less digits than its factorization.

71030612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17757657 (or 17757655 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 71030612 is about 8427.9660654276. The cubic root of 71030612 is about 414.1412775243.

Adding to 71030612 its reverse (21603017), we get a palindrome (92633629).

The spelling of 71030612 in words is "seventy-one million, thirty thousand, six hundred twelve".