71214644 has 12 divisors (see below), whose sum is σ = 124916484. Its totient is φ = 35524224.

The previous prime is 71214623. The next prime is 71214653. The reversal of 71214644 is 44641217.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 44382244 = 5180^2 + 6662^2 .

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 3 ways as a sum of consecutive naturals, for example, 18827 + ... + 22290.

It is an arithmetic number, because the mean of its divisors is an integer number (10409707).

Almost surely, 2^71214644 is an apocalyptic number.

It is an amenable number.

71214644 is a deficient number, since it is larger than the sum of its proper divisors (53701840).

71214644 is a wasteful number, since it uses less digits than its factorization.

71214644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41554 (or 41552 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 71214644 is about 8438.8769394985. The cubic root of 71214644 is about 414.4986329350.

The spelling of 71214644 in words is "seventy-one million, two hundred fourteen thousand, six hundred forty-four".