71229616 has 20 divisors (see below), whose sum is σ = 138141952. Its totient is φ = 35580096.

The previous prime is 71229593. The next prime is 71229617. The reversal of 71229616 is 61692217.

It is not an unprimeable number, because it can be changed into a prime (71229617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25270 + ... + 27946.

Almost surely, 2^71229616 is an apocalyptic number.

It is an amenable number.

71229616 is a deficient number, since it is larger than the sum of its proper divisors (66912336).

71229616 is a wasteful number, since it uses less digits than its factorization.

71229616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348 (or 4342 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 71229616 is about 8439.7639777425. The cubic root of 71229616 is about 414.5276786403.

The spelling of 71229616 in words is "seventy-one million, two hundred twenty-nine thousand, six hundred sixteen".