126877693 has 2 divisors, whose sum is σ = 126877694. Its totient is φ = 126877692.

The previous prime is 126877661. The next prime is 126877741. The reversal of 126877693 is 396778621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73908409 + 52969284 = 8597^2 + 7278^2 .

It is a cyclic number.

It is not a de Polignac number, because 126877693 - 2⁵ = 126877661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126877633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63438846 + 63438847.

It is an arithmetic number, because the mean of its divisors is an integer number (63438847).

Almost surely, 2^126877693 is an apocalyptic number.

It is an amenable number.

126877693 is a deficient number, since it is larger than the sum of its proper divisors (1).

126877693 is an equidigital number, since it uses as much as digits as its factorization.

126877693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 126877693 is about 11263.9998668324. Note that the first 3 decimals coincide. The cubic root of 126877693 is about 502.4911583141.

It can be divided in two parts, 1268 and 77693, that added together give a square (78961 = 281²).

The spelling of 126877693 in words is "one hundred twenty-six million, eight hundred seventy-seven thousand, six hundred ninety-three".