684930286 has 4 divisors (see below), whose sum is σ = 1027395432. Its totient is φ = 342465142.

The previous prime is 684930283. The next prime is 684930287. The reversal of 684930286 is 682039486.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 682039486 = 2 ⋅341019743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684930283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171232570 + ... + 171232573.

It is an arithmetic number, because the mean of its divisors is an integer number (256848858).

Almost surely, 2^684930286 is an apocalyptic number.

684930286 is a deficient number, since it is larger than the sum of its proper divisors (342465146).

684930286 is a wasteful number, since it uses less digits than its factorization.

684930286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342465145.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 684930286 is about 26171.1728052069. The cubic root of 684930286 is about 881.4860763094.

The spelling of 684930286 in words is "six hundred eighty-four million, nine hundred thirty thousand, two hundred eighty-six".