126716645 has 12 divisors (see below), whose sum is σ = 167141100. Its totient is φ = 92157120.

The previous prime is 126716641. The next prime is 126716671. The reversal of 126716645 is 546617621.

It can be written as a sum of positive squares in 2 ways, for example, as 14737921 + 111978724 = 3839^2 + 10582^2 .

It is not a de Polignac number, because 126716645 - 2² = 126716641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126716599 and 126716608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126716641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104120 + ... + 105329.

It is an arithmetic number, because the mean of its divisors is an integer number (13928425).

Almost surely, 2^126716645 is an apocalyptic number.

It is an amenable number.

126716645 is a deficient number, since it is larger than the sum of its proper divisors (40424455).

126716645 is a wasteful number, since it uses less digits than its factorization.

126716645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209476 (or 209465 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 126716645 is about 11256.8488041725. The cubic root of 126716645 is about 502.2784614556.

The spelling of 126716645 in words is "one hundred twenty-six million, seven hundred sixteen thousand, six hundred forty-five".