646126074 has 96 divisors (see below), whose sum is σ = 1624281984. Its totient is φ = 183680640.

The previous prime is 646126067. The next prime is 646126111. The reversal of 646126074 is 470621646.

646126074 is a `hidden beast` number, since 6 + 46 + 1 + 2 + 607 + 4 = 666.

646126074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240024 + ... + 242700.

It is an arithmetic number, because the mean of its divisors is an integer number (16919604).

Almost surely, 2^646126074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646126074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812140992).

646126074 is an abundant number, since it is smaller than the sum of its proper divisors (978155910).

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

646126074 is a wasteful number, since it uses less digits than its factorization.

646126074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2769 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 646126074 is about 25419.0100908749. The cubic root of 646126074 is about 864.5147797123.

The spelling of 646126074 in words is "six hundred forty-six million, one hundred twenty-six thousand, seventy-four".