684469552 has 40 divisors (see below), whose sum is σ = 1430064720. Its totient is φ = 315490560.

The previous prime is 684469531. The next prime is 684469573. The reversal of 684469552 is 255964486.

It is an interprime number because it is at equal distance from previous prime (684469531) and next prime (684469573).

It is a junction number, because it is equal to n+sod(n) for n = 684469496 and 684469505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200274 + ... + 203662.

It is an arithmetic number, because the mean of its divisors is an integer number (35751618).

Almost surely, 2^684469552 is an apocalyptic number.

It is an amenable number.

684469552 is an abundant number, since it is smaller than the sum of its proper divisors (745595168).

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

684469552 is a wasteful number, since it uses less digits than its factorization.

684469552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381 (or 4375 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The square root of 684469552 is about 26162.3690058832. The cubic root of 684469552 is about 881.2883813942.

The spelling of 684469552 in words is "six hundred eighty-four million, four hundred sixty-nine thousand, five hundred fifty-two".