123740663 has 2 divisors, whose sum is σ = 123740664. Its totient is φ = 123740662.

The previous prime is 123740653. The next prime is 123740677. The reversal of 123740663 is 366047321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123740663 - 2⁴ = 123740647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123740653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61870331 + 61870332.

It is an arithmetic number, because the mean of its divisors is an integer number (61870332).

Almost surely, 2^123740663 is an apocalyptic number.

123740663 is a deficient number, since it is larger than the sum of its proper divisors (1).

123740663 is an equidigital number, since it uses as much as digits as its factorization.

123740663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 123740663 is about 11123.8780557861. The cubic root of 123740663 is about 498.3152133644.

Adding to 123740663 its reverse (366047321), we get a palindrome (489787984).

The spelling of 123740663 in words is "one hundred twenty-three million, seven hundred forty thousand, six hundred sixty-three".