684966016 has 32 divisors (see below), whose sum is σ = 1559522880. Its totient is φ = 293556480.

The previous prime is 684965999. The next prime is 684966019. The reversal of 684966016 is 610669486.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (684966019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381340 + ... + 383131.

It is an arithmetic number, because the mean of its divisors is an integer number (48735090).

Almost surely, 2^684966016 is an apocalyptic number.

It is an amenable number.

684966016 is an abundant number, since it is smaller than the sum of its proper divisors (874556864).

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

684966016 is an equidigital number, since it uses as much as digits as its factorization.

684966016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764492 (or 764480 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 684966016 is about 26171.8554176046. The cubic root of 684966016 is about 881.5014038790.

The spelling of 684966016 in words is "six hundred eighty-four million, nine hundred sixty-six thousand, sixteen".