71144590 has 32 divisors (see below), whose sum is σ = 140058720. Its totient is φ = 25804800.

The previous prime is 71144581. The next prime is 71144617. The reversal of 71144590 is 9544117.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 70006 + ... + 71014.

It is an arithmetic number, because the mean of its divisors is an integer number (4376835).

Almost surely, 2^71144590 is an apocalyptic number.

71144590 is a deficient number, since it is larger than the sum of its proper divisors (68914130).

71144590 is a wasteful number, since it uses less digits than its factorization.

71144590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 71144590 is about 8434.7252474518. The cubic root of 71144590 is about 414.3626739424.

The spelling of 71144590 in words is "seventy-one million, one hundred forty-four thousand, five hundred ninety".