71565796 has 6 divisors (see below), whose sum is σ = 125240150. Its totient is φ = 35782896.

The previous prime is 71565757. The next prime is 71565797. The reversal of 71565796 is 69756517.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57608100 + 13957696 = 7590^2 + 3736^2 .

It is a super-2 number, since 2×71565796² = 10243326314227232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71565797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8945721 + ... + 8945728.

Almost surely, 2^71565796 is an apocalyptic number.

It is an amenable number.

71565796 is a deficient number, since it is larger than the sum of its proper divisors (53674354).

71565796 is a wasteful number, since it uses less digits than its factorization.

71565796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17891453 (or 17891451 counting only the distinct ones).

The product of its digits is 396900, while the sum is 46.

The square root of 71565796 is about 8459.6569670407. The cubic root of 71565796 is about 415.1787994244.

It can be divided in two parts, 71565 and 796, that added together give a square (72361 = 269²).

The spelling of 71565796 in words is "seventy-one million, five hundred sixty-five thousand, seven hundred ninety-six".