71618677 has 8 divisors (see below), whose sum is σ = 79009560. Its totient is φ = 64496640.

The previous prime is 71618663. The next prime is 71618699. The reversal of 71618677 is 77681617.

71618677 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 4 ways, for example, as 401956 + 71216721 = 634^2 + 8439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71618677 - 2⁷ = 71618549 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 (71612677) 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 7 ways as a sum of consecutive naturals, for example, 66652 + ... + 67717.

It is an arithmetic number, because the mean of its divisors is an integer number (9876195).

Almost surely, 2^71618677 is an apocalyptic number.

It is an amenable number.

71618677 is a deficient number, since it is larger than the sum of its proper divisors (7390883).

71618677 is a wasteful number, since it uses less digits than its factorization.

71618677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134423.

The product of its digits is 98784, while the sum is 43.

The square root of 71618677 is about 8462.7818712289. The cubic root of 71618677 is about 415.2810347840.

The spelling of 71618677 in words is "seventy-one million, six hundred eighteen thousand, six hundred seventy-seven".