71632906 has 4 divisors (see below), whose sum is σ = 107449362. Its totient is φ = 35816452.

The previous prime is 71632889. The next prime is 71632919. The reversal of 71632906 is 60923617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60923617 = 1171 ⋅52027.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 34117281 = 6125^2 + 5841^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17908225 + ... + 17908228.

Almost surely, 2^71632906 is an apocalyptic number.

71632906 is a deficient number, since it is larger than the sum of its proper divisors (35816456).

71632906 is a wasteful number, since it uses less digits than its factorization.

71632906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35816455.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 71632906 is about 8463.6225104857. The cubic root of 71632906 is about 415.3085352574.

The spelling of 71632906 in words is "seventy-one million, six hundred thirty-two thousand, nine hundred six".