646054740446 has 8 divisors (see below), whose sum is σ = 969350788560. Its totient is φ = 322937810928.

The previous prime is 646054740439. The next prime is 646054740451. The reversal of 646054740446 is 644047450646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 646054740394 and 646054740403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44770631 + ... + 44785058.

It is an arithmetic number, because the mean of its divisors is an integer number (121168848570).

Almost surely, 2^646054740446 is an apocalyptic number.

646054740446 is a deficient number, since it is larger than the sum of its proper divisors (323296048114).

646054740446 is a wasteful number, since it uses less digits than its factorization.

646054740446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89559298.

The product of its (nonzero) digits is 7741440, while the sum is 50.

The spelling of 646054740446 in words is "six hundred forty-six billion, fifty-four million, seven hundred forty thousand, four hundred forty-six".