22329661 has 2 divisors, whose sum is σ = 22329662. Its totient is φ = 22329660.

The previous prime is 22329649. The next prime is 22329667. The reversal of 22329661 is 16692322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18757561 + 3572100 = 4331^2 + 1890^2 .

It is a cyclic number.

It is not a de Polignac number, because 22329661 - 2¹⁵ = 22296893 is a prime.

It is a super-2 number, since 2×22329661² = 997227520749842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22329667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11164830 + 11164831.

It is an arithmetic number, because the mean of its divisors is an integer number (11164831).

Almost surely, 2^22329661 is an apocalyptic number.

It is an amenable number.

22329661 is a deficient number, since it is larger than the sum of its proper divisors (1).

22329661 is an equidigital number, since it uses as much as digits as its factorization.

22329661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 22329661 is about 4725.4270706466. The cubic root of 22329661 is about 281.5965804092.

The spelling of 22329661 in words is "twenty-two million, three hundred twenty-nine thousand, six hundred sixty-one".