71515868 has 12 divisors (see below), whose sum is σ = 127514520. Its totient is φ = 35083152.

The previous prime is 71515841. The next prime is 71515879. The reversal of 71515868 is 86851517.

It is a super-2 number, since 2×71515868² = 10229038751586848, which contains 22 as substring.

It is a congruent number.

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, 168458 + ... + 168881.

It is an arithmetic number, because the mean of its divisors is an integer number (10626210).

Almost surely, 2^71515868 is an apocalyptic number.

It is an amenable number.

71515868 is a deficient number, since it is larger than the sum of its proper divisors (55998652).

71515868 is a wasteful number, since it uses less digits than its factorization.

71515868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337396 (or 337394 counting only the distinct ones).

The product of its digits is 67200, while the sum is 41.

The square root of 71515868 is about 8456.7055051007. The cubic root of 71515868 is about 415.0822268964.

The spelling of 71515868 in words is "seventy-one million, five hundred fifteen thousand, eight hundred sixty-eight".