22397707 has 2 divisors, whose sum is σ = 22397708. Its totient is φ = 22397706.

The previous prime is 22397623. The next prime is 22397729. The reversal of 22397707 is 70779322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22397707 - 2⁷ = 22397579 is a prime.

It is not a weakly prime, because it can be changed into another prime (22397737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11198853 + 11198854.

It is an arithmetic number, because the mean of its divisors is an integer number (11198854).

Almost surely, 2^22397707 is an apocalyptic number.

22397707 is a deficient number, since it is larger than the sum of its proper divisors (1).

22397707 is an equidigital number, since it uses as much as digits as its factorization.

22397707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 22397707 is about 4732.6215779418. The cubic root of 22397707 is about 281.8823302306.

It can be divided in two parts, 22397 and 707, that added together give a square (23104 = 152²).

The spelling of 22397707 in words is "twenty-two million, three hundred ninety-seven thousand, seven hundred seven".