126641646 has 12 divisors (see below), whose sum is σ = 274390272. Its totient is φ = 42213876.

The previous prime is 126641623. The next prime is 126641659. The reversal of 126641646 is 646146621.

126641646 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 4 + 1 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 126641646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3517806 + ... + 3517841.

It is an arithmetic number, because the mean of its divisors is an integer number (22865856).

Almost surely, 2^126641646 is an apocalyptic number.

126641646 is an abundant number, since it is smaller than the sum of its proper divisors (147748626).

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

126641646 is a wasteful number, since it uses less digits than its factorization.

126641646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7035655 (or 7035652 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 126641646 is about 11253.5170502381. The cubic root of 126641646 is about 502.1793484131.

The spelling of 126641646 in words is "one hundred twenty-six million, six hundred forty-one thousand, six hundred forty-six".