64684610000 has 50 divisors (see below), whose sum is σ = 156607933482. Its totient is φ = 25873840000.

The previous prime is 64684609993. The next prime is 64684610009. The reversal of 64684610000 is 1648646.

It can be written as a sum of positive squares in 5 ways, for example, as 8999937424 + 55684672576 = 94868^2 + 235976^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684610009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3224231 + ... + 3244230.

Almost surely, 2^64684610000 is an apocalyptic number.

It is an amenable number.

64684610000 is an abundant number, since it is smaller than the sum of its proper divisors (91923323482).

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

64684610000 is an equidigital number, since it uses as much as digits as its factorization.

64684610000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468489 (or 6468468 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 64684610000 in words is "sixty-four billion, six hundred eighty-four million, six hundred ten thousand".