126785646 has 48 divisors (see below), whose sum is σ = 301444416. Its totient is φ = 38271168.

The previous prime is 126785611. The next prime is 126785647. The reversal of 126785646 is 646587621.

126785646 is a `hidden beast` number, since 12 + 6 + 78 + 564 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126785647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7291 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (6280092).

Almost surely, 2^126785646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126785646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150722208).

126785646 is an abundant number, since it is smaller than the sum of its proper divisors (174658770).

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

126785646 is a wasteful number, since it uses less digits than its factorization.

126785646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10294 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 126785646 is about 11259.9132323478. The cubic root of 126785646 is about 502.3696134567.

The spelling of 126785646 in words is "one hundred twenty-six million, seven hundred eighty-five thousand, six hundred forty-six".