22487671 has 2 divisors, whose sum is σ = 22487672. Its totient is φ = 22487670.

The previous prime is 22487627. The next prime is 22487677. The reversal of 22487671 is 17678422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22487671 - 2¹¹ = 22485623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22487671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22487677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11243835 + 11243836.

It is an arithmetic number, because the mean of its divisors is an integer number (11243836).

Almost surely, 2^22487671 is an apocalyptic number.

22487671 is a deficient number, since it is larger than the sum of its proper divisors (1).

22487671 is an equidigital number, since it uses as much as digits as its factorization.

22487671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 37.

The square root of 22487671 is about 4742.1167214652. The cubic root of 22487671 is about 282.2592346511.

Subtracting from 22487671 its reverse (17678422), we obtain a square (4809249 = 2193²).

The spelling of 22487671 in words is "twenty-two million, four hundred eighty-seven thousand, six hundred seventy-one".