71779113 has 24 divisors (see below), whose sum is σ = 123646848. Its totient is φ = 39232512.

The previous prime is 71779087. The next prime is 71779129. The reversal of 71779113 is 31197717.

It is a de Polignac number, because none of the positive numbers 2^k-71779113 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (71779193) 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 23 ways as a sum of consecutive naturals, for example, 23320 + ... + 26217.

It is an arithmetic number, because the mean of its divisors is an integer number (5151952).

Almost surely, 2^71779113 is an apocalyptic number.

It is an amenable number.

71779113 is a deficient number, since it is larger than the sum of its proper divisors (51867735).

71779113 is a wasteful number, since it uses less digits than its factorization.

71779113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49573 (or 49570 counting only the distinct ones).

The product of its digits is 9261, while the sum is 36.

The square root of 71779113 is about 8472.2554848163. The cubic root of 71779113 is about 415.5908996690.

It can be divided in two parts, 7177 and 9113, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 71779113 in words is "seventy-one million, seven hundred seventy-nine thousand, one hundred thirteen".