71106506 has 4 divisors (see below), whose sum is σ = 106659762. Its totient is φ = 35553252.

The previous prime is 71106499. The next prime is 71106509. The reversal of 71106506 is 60560117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 67650625 + 3455881 = 8225^2 + 1859^2 .

It is a super-2 number, since 2×71106506² = 10112270391056072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71106509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17776625 + ... + 17776628.

Almost surely, 2^71106506 is an apocalyptic number.

71106506 is a deficient number, since it is larger than the sum of its proper divisors (35553256).

71106506 is a wasteful number, since it uses less digits than its factorization.

71106506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35553255.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 71106506 is about 8432.4673731951. The cubic root of 71106506 is about 414.2887240481.

The spelling of 71106506 in words is "seventy-one million, one hundred six thousand, five hundred six".