71947706 has 12 divisors (see below), whose sum is σ = 114644238. Its totient is φ = 33857472.

The previous prime is 71947697. The next prime is 71947769. The reversal of 71947706 is 60774917.

It can be written as a sum of positive squares in 3 ways, for example, as 71250481 + 697225 = 8441^2 + 835^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61661 + ... + 62816.

Almost surely, 2^71947706 is an apocalyptic number.

71947706 is a deficient number, since it is larger than the sum of its proper divisors (42696532).

71947706 is a wasteful number, since it uses less digits than its factorization.

71947706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124513 (or 124496 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 71947706 is about 8482.1993610148. The cubic root of 71947706 is about 415.9160217873.

The spelling of 71947706 in words is "seventy-one million, nine hundred forty-seven thousand, seven hundred six".