6604464220646 has 16 divisors (see below), whose sum is σ = 10574976072960. Its totient is φ = 3084368018760.

The previous prime is 6604464220639. The next prime is 6604464220657. The reversal of 6604464220646 is 6460224644066.

It is a junction number, because it is equal to n+sod(n) for n = 6604464220594 and 6604464220603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223952866 + ... + 1223958261.

It is an arithmetic number, because the mean of its divisors is an integer number (660936004560).

Almost surely, 2^{6604464220646} is an apocalyptic number.

6604464220646 is a deficient number, since it is larger than the sum of its proper divisors (3970511852314).

6604464220646 is a wasteful number, since it uses less digits than its factorization.

6604464220646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447911219.

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 6604464220646 in words is "six trillion, six hundred four billion, four hundred sixty-four million, two hundred twenty thousand, six hundred forty-six".