684892416 has 144 divisors (see below), whose sum is σ = 1979082560. Its totient is φ = 209018880.

The previous prime is 684892409. The next prime is 684892421. The reversal of 684892416 is 614298486.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806915 + ... + 1807293.

Almost surely, 2^684892416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684892416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989541280).

684892416 is an abundant number, since it is smaller than the sum of its proper divisors (1294190144).

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

684892416 is a wasteful number, since it uses less digits than its factorization.

684892416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 578 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 684892416 is about 26170.4492892270. The cubic root of 684892416 is about 881.4698301338.

The spelling of 684892416 in words is "six hundred eighty-four million, eight hundred ninety-two thousand, four hundred sixteen".