22646761 has 2 divisors, whose sum is σ = 22646762. Its totient is φ = 22646760.

The previous prime is 22646759. The next prime is 22646831. The reversal of 22646761 is 16764622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22619536 + 27225 = 4756^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 22646761 - 2¹ = 22646759 is a prime.

It is a super-2 number, since 2×22646761² = 1025751567582242, which contains 22 as substring.

Together with 22646759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22646711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11323380 + 11323381.

It is an arithmetic number, because the mean of its divisors is an integer number (11323381).

Almost surely, 2^22646761 is an apocalyptic number.

It is an amenable number.

22646761 is a deficient number, since it is larger than the sum of its proper divisors (1).

22646761 is an equidigital number, since it uses as much as digits as its factorization.

22646761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 22646761 is about 4758.8613133816. The cubic root of 22646761 is about 282.9232895259.

It can be divided in two parts, 2264 and 6761, that added together give a square (9025 = 95²).

The spelling of 22646761 in words is "twenty-two million, six hundred forty-six thousand, seven hundred sixty-one".