75068509 has 4 divisors (see below), whose sum is σ = 75529216. Its totient is φ = 74607804.

The previous prime is 75068507. The next prime is 75068519. The reversal of 75068509 is 90586057.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75068509 - 2¹ = 75068507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75068507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230109 + ... + 230434.

It is an arithmetic number, because the mean of its divisors is an integer number (18882304).

Almost surely, 2^75068509 is an apocalyptic number.

It is an amenable number.

75068509 is a deficient number, since it is larger than the sum of its proper divisors (460707).

75068509 is a wasteful number, since it uses less digits than its factorization.

75068509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460706.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 75068509 is about 8664.2085039546. The cubic root of 75068509 is about 421.8446996363.

The spelling of 75068509 in words is "seventy-five million, sixty-eight thousand, five hundred nine".