75223644 has 12 divisors (see below), whose sum is σ = 175521864. Its totient is φ = 25074544.

The previous prime is 75223637. The next prime is 75223663. The reversal of 75223644 is 44632257.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134307 + ... + 3134330.

It is an arithmetic number, because the mean of its divisors is an integer number (14626822).

Almost surely, 2^75223644 is an apocalyptic number.

It is an amenable number.

75223644 is an abundant number, since it is smaller than the sum of its proper divisors (100298220).

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

75223644 is a wasteful number, since it uses less digits than its factorization.

75223644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268644 (or 6268642 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 75223644 is about 8673.1565188229. The cubic root of 75223644 is about 422.1350914801.

The spelling of 75223644 in words is "seventy-five million, two hundred twenty-three thousand, six hundred forty-four".