71759641 has 4 divisors (see below), whose sum is σ = 72283572. Its totient is φ = 71235712.

The previous prime is 71759627. The next prime is 71759663. The reversal of 71759641 is 14695717.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49632025 + 22127616 = 7045^2 + 4704^2 .

It is a cyclic number.

It is not a de Polignac number, because 71759641 - 2¹⁵ = 71726873 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71759594 and 71759603.

It is not an unprimeable number, because it can be changed into a prime (71759621) 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, 261760 + ... + 262033.

It is an arithmetic number, because the mean of its divisors is an integer number (18070893).

Almost surely, 2^71759641 is an apocalyptic number.

It is an amenable number.

71759641 is a deficient number, since it is larger than the sum of its proper divisors (523931).

71759641 is a wasteful number, since it uses less digits than its factorization.

71759641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523930.

The product of its digits is 52920, while the sum is 40.

The square root of 71759641 is about 8471.1062441691. The cubic root of 71759641 is about 415.5533162294.

The spelling of 71759641 in words is "seventy-one million, seven hundred fifty-nine thousand, six hundred forty-one".