71736506 has 8 divisors (see below), whose sum is σ = 108067284. Its totient is φ = 35714080.

The previous prime is 71736499. The next prime is 71736521. The reversal of 71736506 is 60563717.

It can be written as a sum of positive squares in 2 ways, for example, as 67092481 + 4644025 = 8191^2 + 2155^2 .

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

It is a super-2 number, since 2×71736506² = 10292252586176072, which contains 22 as substring.

It is an unprimeable number.

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, 76505 + ... + 77436.

Almost surely, 2^71736506 is an apocalyptic number.

71736506 is a deficient number, since it is larger than the sum of its proper divisors (36330778).

71736506 is a wasteful number, since it uses less digits than its factorization.

71736506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154176.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 71736506 is about 8469.7406099597. The cubic root of 71736506 is about 415.5086538947.

The spelling of 71736506 in words is "seventy-one million, seven hundred thirty-six thousand, five hundred six".