126663697 has 2 divisors, whose sum is σ = 126663698. Its totient is φ = 126663696.

The previous prime is 126663689. The next prime is 126663707. The reversal of 126663697 is 796366621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110334016 + 16329681 = 10504^2 + 4041^2 .

It is a cyclic number.

It is not a de Polignac number, because 126663697 - 2³ = 126663689 is a prime.

It is not a weakly prime, because it can be changed into another prime (126663197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63331848 + 63331849.

It is an arithmetic number, because the mean of its divisors is an integer number (63331849).

Almost surely, 2^126663697 is an apocalyptic number.

It is an amenable number.

126663697 is a deficient number, since it is larger than the sum of its proper divisors (1).

126663697 is an equidigital number, since it uses as much as digits as its factorization.

126663697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 126663697 is about 11254.4967457457. The cubic root of 126663697 is about 502.2084934179.

The spelling of 126663697 in words is "one hundred twenty-six million, six hundred sixty-three thousand, six hundred ninety-seven".