71770771 has 6 divisors (see below), whose sum is σ = 75747372. Its totient is φ = 67993020.

The previous prime is 71770763. The next prime is 71770799. The reversal of 71770771 is 17707717.

It is not a de Polignac number, because 71770771 - 2³ = 71770763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71770771.

It is not an unprimeable number, because it can be changed into a prime (71770711) 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 5 ways as a sum of consecutive naturals, for example, 99045 + ... + 99766.

It is an arithmetic number, because the mean of its divisors is an integer number (12624562).

Almost surely, 2^71770771 is an apocalyptic number.

71770771 is a deficient number, since it is larger than the sum of its proper divisors (3976601).

71770771 is a wasteful number, since it uses less digits than its factorization.

71770771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198849 (or 198830 counting only the distinct ones).

The product of its (nonzero) digits is 16807, while the sum is 37.

The square root of 71770771 is about 8471.7631576904. The cubic root of 71770771 is about 415.5747993790.

The spelling of 71770771 in words is "seventy-one million, seven hundred seventy thousand, seven hundred seventy-one".