75643775 has 12 divisors (see below), whose sum is σ = 93906192. Its totient is φ = 60445440.

The previous prime is 75643759. The next prime is 75643817. The reversal of 75643775 is 57734657.

It is not a de Polignac number, because 75643775 - 2⁴ = 75643759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41534 + ... + 43316.

It is an arithmetic number, because the mean of its divisors is an integer number (7825516).

Almost surely, 2^75643775 is an apocalyptic number.

75643775 is a deficient number, since it is larger than the sum of its proper divisors (18262417).

75643775 is a wasteful number, since it uses less digits than its factorization.

75643775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490 (or 3485 counting only the distinct ones).

The product of its digits is 617400, while the sum is 44.

The square root of 75643775 is about 8697.3429850731. The cubic root of 75643775 is about 422.9195207435.

The spelling of 75643775 in words is "seventy-five million, six hundred forty-three thousand, seven hundred seventy-five".