71216590 has 16 divisors (see below), whose sum is σ = 131317200. Its totient is φ = 27791680.

The previous prime is 71216581. The next prime is 71216597. The reversal of 71216590 is 9561217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71216597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86440 + ... + 87259.

It is an arithmetic number, because the mean of its divisors is an integer number (8207325).

Almost surely, 2^71216590 is an apocalyptic number.

71216590 is a deficient number, since it is larger than the sum of its proper divisors (60100610).

71216590 is a wasteful number, since it uses less digits than its factorization.

71216590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173747.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 71216590 is about 8438.9922384133. The cubic root of 71216590 is about 414.5024084085.

The spelling of 71216590 in words is "seventy-one million, two hundred sixteen thousand, five hundred ninety".