71829791 has 4 divisors (see below), whose sum is σ = 78359784. Its totient is φ = 65299800.

The previous prime is 71829767. The next prime is 71829799. The reversal of 71829791 is 19792817.

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

It is a cyclic number.

It is not a de Polignac number, because 71829791 - 2¹⁸ = 71567647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71829799) 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, 3264980 + ... + 3265001.

It is an arithmetic number, because the mean of its divisors is an integer number (19589946).

Almost surely, 2^71829791 is an apocalyptic number.

71829791 is a deficient number, since it is larger than the sum of its proper divisors (6529993).

71829791 is a wasteful number, since it uses less digits than its factorization.

71829791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529992.

The product of its digits is 63504, while the sum is 44.

The square root of 71829791 is about 8475.2457781471. The cubic root of 71829791 is about 415.6886828079.

The spelling of 71829791 in words is "seventy-one million, eight hundred twenty-nine thousand, seven hundred ninety-one".