126663776 has 12 divisors (see below), whose sum is σ = 249369372. Its totient is φ = 63331872.

The previous prime is 126663773. The next prime is 126663791. The reversal of 126663776 is 677366621.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126663773) 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, 1979090 + ... + 1979153.

It is an arithmetic number, because the mean of its divisors is an integer number (20780781).

Almost surely, 2^126663776 is an apocalyptic number.

126663776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126663776 is a deficient number, since it is larger than the sum of its proper divisors (122705596).

126663776 is an equidigital number, since it uses as much as digits as its factorization.

126663776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958253 (or 3958245 counting only the distinct ones).

The product of its digits is 381024, while the sum is 44.

The square root of 126663776 is about 11254.5002554534. The cubic root of 126663776 is about 502.2085978268.

The spelling of 126663776 in words is "one hundred twenty-six million, six hundred sixty-three thousand, seven hundred seventy-six".