684261064810 has 8 divisors (see below), whose sum is σ = 1231669916676. Its totient is φ = 273704425920.

The previous prime is 684261064759. The next prime is 684261064829. The reversal of 684261064810 is 18460162486.

It can be written as a sum of positive squares in 2 ways, for example, as 676609888969 + 7651175841 = 822563^2 + 87471^2 .

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

It is a super-2 number, since 2×684261064810² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34213053231 + ... + 34213053250.

Almost surely, 2^684261064810 is an apocalyptic number.

684261064810 is a deficient number, since it is larger than the sum of its proper divisors (547408851866).

684261064810 is a wasteful number, since it uses less digits than its factorization.

684261064810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68426106488.

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 684261064810 in words is "six hundred eighty-four billion, two hundred sixty-one million, sixty-four thousand, eight hundred ten".