684316798730 has 8 divisors (see below), whose sum is σ = 1231770237732. Its totient is φ = 273726719488.

The previous prime is 684316798727. The next prime is 684316798889. The reversal of 684316798730 is 37897613486.

It can be written as a sum of positive squares in 2 ways, for example, as 683824801969 + 491996761 = 826937^2 + 22181^2 .

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

It is a super-2 number, since 2×684316798730² (a number of 24 digits) contains 22 as substring.

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, 34215839927 + ... + 34215839946.

Almost surely, 2^684316798730 is an apocalyptic number.

684316798730 is a deficient number, since it is larger than the sum of its proper divisors (547453439002).

684316798730 is a wasteful number, since it uses less digits than its factorization.

684316798730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68431679880.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 684316798730 in words is "six hundred eighty-four billion, three hundred sixteen million, seven hundred ninety-eight thousand, seven hundred thirty".