126650660 has 24 divisors (see below), whose sum is σ = 266467320. Its totient is φ = 50564864.

The previous prime is 126650651. The next prime is 126650683. The reversal of 126650660 is 66056621.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 124902976 = 1322^2 + 11176^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5456 + ... + 16824.

It is an arithmetic number, because the mean of its divisors is an integer number (11102805).

Almost surely, 2^126650660 is an apocalyptic number.

126650660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126650660 is an abundant number, since it is smaller than the sum of its proper divisors (139816660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126650660 is a wasteful number, since it uses less digits than its factorization.

126650660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935 (or 11933 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 126650660 is about 11253.9175401280. The cubic root of 126650660 is about 502.1912627067.

The spelling of 126650660 in words is "one hundred twenty-six million, six hundred fifty thousand, six hundred sixty".