75009806 has 4 divisors (see below), whose sum is σ = 112514712. Its totient is φ = 37504902.

The previous prime is 75009769. The next prime is 75009811. The reversal of 75009806 is 60890057.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 18752450 + ... + 18752453.

It is an arithmetic number, because the mean of its divisors is an integer number (28128678).

Almost surely, 2^75009806 is an apocalyptic number.

75009806 is a deficient number, since it is larger than the sum of its proper divisors (37504906).

75009806 is a wasteful number, since it uses less digits than its factorization.

75009806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37504905.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 75009806 is about 8660.8201690140. The cubic root of 75009806 is about 421.7347111848.

The spelling of 75009806 in words is "seventy-five million, nine thousand, eight hundred six".