71688447674 has 8 divisors (see below), whose sum is σ = 107536806900. Its totient is φ = 35842845376.

The previous prime is 71688447641. The next prime is 71688447707. The reversal of 71688447674 is 47674488617.

It is an interprime number because it is at equal distance from previous prime (71688447641) and next prime (71688447707).

It can be written as a sum of positive squares in 2 ways, for example, as 70016864449 + 1671583225 = 264607^2 + 40885^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622949 + ... + 729000.

Almost surely, 2^71688447674 is an apocalyptic number.

71688447674 is a deficient number, since it is larger than the sum of its proper divisors (35848359226).

71688447674 is a wasteful number, since it uses less digits than its factorization.

71688447674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378464.

The product of its digits is 50577408, while the sum is 62.

The spelling of 71688447674 in words is "seventy-one billion, six hundred eighty-eight million, four hundred forty-seven thousand, six hundred seventy-four".