684282730 has 16 divisors (see below), whose sum is σ = 1245549960. Its totient is φ = 270637312.

The previous prime is 684282719. The next prime is 684282749. The reversal of 684282730 is 37282486.

It can be written as a sum of positive squares in 4 ways, for example, as 560695041 + 123587689 = 23679^2 + 11117^2 .

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, 383539 + ... + 385318.

Almost surely, 2^684282730 is an apocalyptic number.

684282730 is a deficient number, since it is larger than the sum of its proper divisors (561267230).

684282730 is a wasteful number, since it uses less digits than its factorization.

684282730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768953.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 684282730 is about 26158.7983286695. The cubic root of 684282730 is about 881.2081932450.

The spelling of 684282730 in words is "six hundred eighty-four million, two hundred eighty-two thousand, seven hundred thirty".