71070816 has 24 divisors (see below), whose sum is σ = 186561144. Its totient is φ = 23690240.

The previous prime is 71070809. The next prime is 71070847. The reversal of 71070816 is 61807017.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370065 + ... + 370256.

It is an arithmetic number, because the mean of its divisors is an integer number (7773381).

Almost surely, 2^71070816 is an apocalyptic number.

It is an amenable number.

71070816 is an abundant number, since it is smaller than the sum of its proper divisors (115490328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71070816 is a wasteful number, since it uses less digits than its factorization.

71070816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740334 (or 740326 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 71070816 is about 8430.3508823773. The cubic root of 71070816 is about 414.2193987506.

The spelling of 71070816 in words is "seventy-one million, seventy thousand, eight hundred sixteen".