22775647 has 2 divisors, whose sum is σ = 22775648. Its totient is φ = 22775646.

The previous prime is 22775633. The next prime is 22775651. The reversal of 22775647 is 74657722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22775647 - 2¹⁵ = 22742879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22775657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387823 + 11387824.

It is an arithmetic number, because the mean of its divisors is an integer number (11387824).

Almost surely, 2^22775647 is an apocalyptic number.

22775647 is a deficient number, since it is larger than the sum of its proper divisors (1).

22775647 is an equidigital number, since it uses as much as digits as its factorization.

22775647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 40.

The square root of 22775647 is about 4772.3837859083. The cubic root of 22775647 is about 283.4589937030.

The spelling of 22775647 in words is "twenty-two million, seven hundred seventy-five thousand, six hundred forty-seven".