71160977 has 4 divisors (see below), whose sum is σ = 71813940. Its totient is φ = 70508016.

The previous prime is 71160967. The next prime is 71160979. The reversal of 71160977 is 77906117.

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 33166081 + 37994896 = 5759^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 71160977 - 2¹⁸ = 70898833 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 71160977.

It is not an unprimeable number, because it can be changed into a prime (71160979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326318 + ... + 326535.

It is an arithmetic number, because the mean of its divisors is an integer number (17953485).

Almost surely, 2^71160977 is an apocalyptic number.

It is an amenable number.

71160977 is a deficient number, since it is larger than the sum of its proper divisors (652963).

71160977 is a wasteful number, since it uses less digits than its factorization.

71160977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652962.

The product of its (nonzero) digits is 18522, while the sum is 38.

The square root of 71160977 is about 8435.6965924576. The cubic root of 71160977 is about 414.3944854025.

The spelling of 71160977 in words is "seventy-one million, one hundred sixty thousand, nine hundred seventy-seven".