71606473 has 4 divisors (see below), whose sum is σ = 71981568. Its totient is φ = 71231380.

The previous prime is 71606461. The next prime is 71606489. The reversal of 71606473 is 37460617.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37460617 = 31 ⋅1208407.

It is a cyclic number.

It is not a de Polignac number, because 71606473 - 2⁵ = 71606441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71606413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187261 + ... + 187642.

It is an arithmetic number, because the mean of its divisors is an integer number (17995392).

Almost surely, 2^71606473 is an apocalyptic number.

It is an amenable number.

71606473 is a deficient number, since it is larger than the sum of its proper divisors (375095).

71606473 is a wasteful number, since it uses less digits than its factorization.

71606473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375094.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 71606473 is about 8462.0608010106. The cubic root of 71606473 is about 415.2574451383.

The spelling of 71606473 in words is "seventy-one million, six hundred six thousand, four hundred seventy-three".