126633631 has 2 divisors, whose sum is σ = 126633632. Its totient is φ = 126633630.

The previous prime is 126633623. The next prime is 126633641. The reversal of 126633631 is 136336621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126633631 - 2³ = 126633623 is a prime.

It is a super-2 number, since 2×126633631² = 32072153000488322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126633593 and 126633602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126633641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63316815 + 63316816.

It is an arithmetic number, because the mean of its divisors is an integer number (63316816).

Almost surely, 2^126633631 is an apocalyptic number.

126633631 is a deficient number, since it is larger than the sum of its proper divisors (1).

126633631 is an equidigital number, since it uses as much as digits as its factorization.

126633631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 31.

The square root of 126633631 is about 11253.1609337110. The cubic root of 126633631 is about 502.1687540772.

The spelling of 126633631 in words is "one hundred twenty-six million, six hundred thirty-three thousand, six hundred thirty-one".