684857190324 has 12 divisors (see below), whose sum is σ = 1598000110784. Its totient is φ = 228285730104.

The previous prime is 684857190293. The next prime is 684857190349. The reversal of 684857190324 is 423091758486.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×684857190324² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 28535716252 + ... + 28535716275.

It is a 1-persistent number, because it is pandigital, but 2⋅684857190324 = 1369714380648 is not.

Almost surely, 2^684857190324 is an apocalyptic number.

It is an amenable number.

684857190324 is an abundant number, since it is smaller than the sum of its proper divisors (913142920460).

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

684857190324 is a wasteful number, since it uses less digits than its factorization.

684857190324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57071432534 (or 57071432532 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 684857190324 in words is "six hundred eighty-four billion, eight hundred fifty-seven million, one hundred ninety thousand, three hundred twenty-four".