71705070 has 48 divisors (see below), whose sum is σ = 186864912. Its totient is φ = 19077120.

The previous prime is 71705063. The next prime is 71705113. The reversal of 71705070 is 7050717.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61614 + ... + 62766.

It is an arithmetic number, because the mean of its divisors is an integer number (3893019).

Almost surely, 2^71705070 is an apocalyptic number.

71705070 is an abundant number, since it is smaller than the sum of its proper divisors (115159842).

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

71705070 is a wasteful number, since it uses less digits than its factorization.

71705070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 1715, while the sum is 27.

The square root of 71705070 is about 8467.8846236826. The cubic root of 71705070 is about 415.4479510104.

Adding to 71705070 its reverse (7050717), we get a palindrome (78755787).

The spelling of 71705070 in words is "seventy-one million, seven hundred five thousand, seventy".