71761983 has 4 divisors (see below), whose sum is σ = 95682648. Its totient is φ = 47841320.

The previous prime is 71761973. The next prime is 71761999. The reversal of 71761983 is 38916717.

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 71761983 - 2⁴ = 71761967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71761973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11960328 + ... + 11960333.

It is an arithmetic number, because the mean of its divisors is an integer number (23920662).

Almost surely, 2^71761983 is an apocalyptic number.

71761983 is a deficient number, since it is larger than the sum of its proper divisors (23920665).

71761983 is a wasteful number, since it uses less digits than its factorization.

71761983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23920664.

The product of its digits is 63504, while the sum is 42.

The square root of 71761983 is about 8471.2444776432. The cubic root of 71761983 is about 415.5578369473.

The spelling of 71761983 in words is "seventy-one million, seven hundred sixty-one thousand, nine hundred eighty-three".