684450002 has 16 divisors (see below), whose sum is σ = 1049829120. Its totient is φ = 334525248.

The previous prime is 684449959. The next prime is 684450007. The reversal of 684450002 is 200054486.

It is not an unprimeable number, because it can be changed into a prime (684450007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79274 + ... + 87482.

It is an arithmetic number, because the mean of its divisors is an integer number (65614320).

Almost surely, 2^684450002 is an apocalyptic number.

684450002 is a deficient number, since it is larger than the sum of its proper divisors (365379118).

684450002 is a wasteful number, since it uses less digits than its factorization.

684450002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 684450002 is about 26161.9953749709. The cubic root of 684450002 is about 881.2799907839.

It can be divided in two parts, 68445000 and 2, that multiplied together give a square (136890000 = 11700²).

The spelling of 684450002 in words is "six hundred eighty-four million, four hundred fifty thousand, two".