684098692 has 6 divisors (see below), whose sum is σ = 1197172718. Its totient is φ = 342049344.

The previous prime is 684098659. The next prime is 684098693. The reversal of 684098692 is 296890486.

It can be written as a sum of positive squares in only one way, i.e., 653006916 + 31091776 = 25554^2 + 5576^2 .

It is a super-2 number, since 2×684098692² = 935982040792221728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (684098693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85512333 + ... + 85512340.

Almost surely, 2^684098692 is an apocalyptic number.

It is an amenable number.

684098692 is a deficient number, since it is larger than the sum of its proper divisors (513074026).

684098692 is a wasteful number, since it uses less digits than its factorization.

684098692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171024677 (or 171024675 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 684098692 is about 26155.2803846566. The cubic root of 684098692 is about 881.1291857784.

The spelling of 684098692 in words is "six hundred eighty-four million, ninety-eight thousand, six hundred ninety-two".