646454600604 has 36 divisors (see below), whose sum is σ = 1730216726784. Its totient is φ = 202809286272.

The previous prime is 646454600573. The next prime is 646454600629. The reversal of 646454600604 is 406006454646.

646454600604 is a `hidden beast` number, since 6 + 46 + 4 + 546 + 0 + 0 + 60 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 646454600604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 528148572 + ... + 528149795.

It is an arithmetic number, because the mean of its divisors is an integer number (48061575744).

Almost surely, 2^646454600604 is an apocalyptic number.

It is an amenable number.

646454600604 is an abundant number, since it is smaller than the sum of its proper divisors (1083762126180).

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

646454600604 is a wasteful number, since it uses less digits than its factorization.

646454600604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056298394 (or 1056298389 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 646454600604 in words is "six hundred forty-six billion, four hundred fifty-four million, six hundred thousand, six hundred four".