126766777 has 4 divisors (see below), whose sum is σ = 132278400. Its totient is φ = 121255156.

The previous prime is 126766753. The next prime is 126766799. The reversal of 126766777 is 777667621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 777667621 = 163 ⋅4770967.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126766777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126766777.

It is not an unprimeable number, because it can be changed into a prime (126766177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755777 + ... + 2755822.

It is an arithmetic number, because the mean of its divisors is an integer number (33069600).

Almost surely, 2^126766777 is an apocalyptic number.

It is an amenable number.

126766777 is a deficient number, since it is larger than the sum of its proper divisors (5511623).

126766777 is an equidigital number, since it uses as much as digits as its factorization.

126766777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511622.

The product of its digits is 1037232, while the sum is 49.

The square root of 126766777 is about 11259.0753172718. The cubic root of 126766777 is about 502.3446903343.

The spelling of 126766777 in words is "one hundred twenty-six million, seven hundred sixty-six thousand, seven hundred seventy-seven".