71596816 has 10 divisors (see below), whose sum is σ = 138718862. Its totient is φ = 35798400.

The previous prime is 71596793. The next prime is 71596823. The reversal of 71596816 is 61869517.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65545216 + 6051600 = 8096^2 + 2460^2 .

It is a super-2 number, since 2×71596816² = 10252208122675712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2237385 + ... + 2237416.

Almost surely, 2^71596816 is an apocalyptic number.

It is an amenable number.

71596816 is a deficient number, since it is larger than the sum of its proper divisors (67122046).

71596816 is a wasteful number, since it uses less digits than its factorization.

71596816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474809 (or 4474803 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 71596816 is about 8461.4901760860. The cubic root of 71596816 is about 415.2387768007.

The spelling of 71596816 in words is "seventy-one million, five hundred ninety-six thousand, eight hundred sixteen".