684774246 has 32 divisors (see below), whose sum is σ = 1561660128. Its totient is φ = 198305280.

The previous prime is 684774241. The next prime is 684774253. The reversal of 684774246 is 642477486.

It is a junction number, because it is equal to n+sod(n) for n = 684774195 and 684774204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684774241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256885 + ... + 259536.

It is an arithmetic number, because the mean of its divisors is an integer number (48801879).

Almost surely, 2^684774246 is an apocalyptic number.

684774246 is an abundant number, since it is smaller than the sum of its proper divisors (876885882).

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

684774246 is a wasteful number, since it uses less digits than its factorization.

684774246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516456.

The product of its digits is 1806336, while the sum is 48.

The square root of 684774246 is about 26168.1914927264. The cubic root of 684774246 is about 881.4191315235.

The spelling of 684774246 in words is "six hundred eighty-four million, seven hundred seventy-four thousand, two hundred forty-six".