126630997 has 2 divisors, whose sum is σ = 126630998. Its totient is φ = 126630996.

The previous prime is 126630989. The next prime is 126631003. The reversal of 126630997 is 799036621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92044836 + 34586161 = 9594^2 + 5881^2 .

It is a cyclic number.

It is not a de Polignac number, because 126630997 - 2³ = 126630989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126630947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63315498 + 63315499.

It is an arithmetic number, because the mean of its divisors is an integer number (63315499).

Almost surely, 2^126630997 is an apocalyptic number.

It is an amenable number.

126630997 is a deficient number, since it is larger than the sum of its proper divisors (1).

126630997 is an equidigital number, since it uses as much as digits as its factorization.

126630997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 126630997 is about 11253.0438993190. The cubic root of 126630997 is about 502.1652723226.

The spelling of 126630997 in words is "one hundred twenty-six million, six hundred thirty thousand, nine hundred ninety-seven".