71275660 has 12 divisors (see below), whose sum is σ = 149678928. Its totient is φ = 28510256.

The previous prime is 71275657. The next prime is 71275681. The reversal of 71275660 is 6657217.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781872 + ... + 1781911.

It is an arithmetic number, because the mean of its divisors is an integer number (12473244).

Almost surely, 2^71275660 is an apocalyptic number.

It is an amenable number.

71275660 is an abundant number, since it is smaller than the sum of its proper divisors (78403268).

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

71275660 is a wasteful number, since it uses less digits than its factorization.

71275660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563792 (or 3563790 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 71275660 is about 8442.4913384617. The cubic root of 71275660 is about 414.6169785803.

The spelling of 71275660 in words is "seventy-one million, two hundred seventy-five thousand, six hundred sixty".