22701709 has 4 divisors (see below), whose sum is σ = 22782780. Its totient is φ = 22620640.

The previous prime is 22701697. The next prime is 22701719. The reversal of 22701709 is 90710722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90710722 = 2 ⋅45355361.

It can be written as a sum of positive squares in 2 ways, for example, as 8094025 + 14607684 = 2845^2 + 3822^2 .

It is a cyclic number.

It is not a de Polignac number, because 22701709 - 2⁹ = 22701197 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 (22701719) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 40114 + ... + 40675.

It is an arithmetic number, because the mean of its divisors is an integer number (5695695).

Almost surely, 2^22701709 is an apocalyptic number.

It is an amenable number.

22701709 is a deficient number, since it is larger than the sum of its proper divisors (81071).

22701709 is an equidigital number, since it uses as much as digits as its factorization.

22701709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81070.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 22701709 is about 4764.6310455270. The cubic root of 22701709 is about 283.1519243205.

The spelling of 22701709 in words is "twenty-two million, seven hundred one thousand, seven hundred nine".