126883681 has 2 divisors, whose sum is σ = 126883682. Its totient is φ = 126883680.

The previous prime is 126883667. The next prime is 126883711. The reversal of 126883681 is 186388621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78163281 + 48720400 = 8841^2 + 6980^2 .

It is a cyclic number.

It is not a de Polignac number, because 126883681 - 2⁵ = 126883649 is a prime.

It is a super-2 number, since 2×126883681² = 32198937008219522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126883621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63441840 + 63441841.

It is an arithmetic number, because the mean of its divisors is an integer number (63441841).

Almost surely, 2^126883681 is an apocalyptic number.

It is an amenable number.

126883681 is a deficient number, since it is larger than the sum of its proper divisors (1).

126883681 is an equidigital number, since it uses as much as digits as its factorization.

126883681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 43.

The square root of 126883681 is about 11264.2656662563. The cubic root of 126883681 is about 502.4990632228.

The spelling of 126883681 in words is "one hundred twenty-six million, eight hundred eighty-three thousand, six hundred eighty-one".