71397608 has 8 divisors (see below), whose sum is σ = 133870530. Its totient is φ = 35698800.

The previous prime is 71397539. The next prime is 71397631. The reversal of 71397608 is 80679317.

It can be written as a sum of positive squares in only one way, i.e., 67930564 + 3467044 = 8242^2 + 1862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4462343 + ... + 4462358.

Almost surely, 2^71397608 is an apocalyptic number.

It is an amenable number.

71397608 is a deficient number, since it is larger than the sum of its proper divisors (62472922).

71397608 is a wasteful number, since it uses less digits than its factorization.

71397608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8924707 (or 8924703 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 71397608 is about 8449.7105275861. The cubic root of 71397608 is about 414.8533047106.

The spelling of 71397608 in words is "seventy-one million, three hundred ninety-seven thousand, six hundred eight".