126648779 has 4 divisors (see below), whose sum is σ = 126748776. Its totient is φ = 126548784.

The previous prime is 126648763. The next prime is 126648799. The reversal of 126648779 is 977846621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126648779 - 2⁴ = 126648763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126648719) 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 in 3 ways as a sum of consecutive naturals, for example, 48074 + ... + 50639.

It is an arithmetic number, because the mean of its divisors is an integer number (31687194).

Almost surely, 2^126648779 is an apocalyptic number.

126648779 is a deficient number, since it is larger than the sum of its proper divisors (99997).

126648779 is an equidigital number, since it uses as much as digits as its factorization.

126648779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99996.

The product of its digits is 1016064, while the sum is 50.

The square root of 126648779 is about 11253.8339689192. The cubic root of 126648779 is about 502.1887765334.

The spelling of 126648779 in words is "one hundred twenty-six million, six hundred forty-eight thousand, seven hundred seventy-nine".