75822109 has 6 divisors (see below), whose sum is σ = 83341790. Its totient is φ = 68929080.

The previous prime is 75822041. The next prime is 75822113. The reversal of 75822109 is 90122857.

It can be written as a sum of positive squares in only one way, i.e., 74563225 + 1258884 = 8635^2 + 1122^2 .

It is not a de Polignac number, because 75822109 - 2⁷ = 75821981 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 (75822169) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 313194 + ... + 313435.

Almost surely, 2^75822109 is an apocalyptic number.

It is an amenable number.

75822109 is a deficient number, since it is larger than the sum of its proper divisors (7519681).

75822109 is a wasteful number, since it uses less digits than its factorization.

75822109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626651 (or 626640 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 75822109 is about 8707.5891611858. The cubic root of 75822109 is about 423.2516112461.

The spelling of 75822109 in words is "seventy-five million, eight hundred twenty-two thousand, one hundred nine".