103722609 has 4 divisors (see below), whose sum is σ = 138296816. Its totient is φ = 69148404.

The previous prime is 103722607. The next prime is 103722623. The reversal of 103722609 is 906227301.

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 not a de Polignac number, because 103722609 - 2¹ = 103722607 is a prime.

It is a super-3 number, since 3×103722609³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (103722607) 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, 17287099 + ... + 17287104.

It is an arithmetic number, because the mean of its divisors is an integer number (34574204).

Almost surely, 2^103722609 is an apocalyptic number.

It is an amenable number.

103722609 is a deficient number, since it is larger than the sum of its proper divisors (34574207).

103722609 is an equidigital number, since it uses as much as digits as its factorization.

103722609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34574206.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 103722609 is about 10184.4297336670. The cubic root of 103722609 is about 469.8484632943.

The spelling of 103722609 in words is "one hundred three million, seven hundred twenty-two thousand, six hundred nine".