684646486 has 4 divisors (see below), whose sum is σ = 1026969732. Its totient is φ = 342323242.

The previous prime is 684646477. The next prime is 684646489.

It is a happy number.

684646486 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684646489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171161620 + ... + 171161623.

It is an arithmetic number, because the mean of its divisors is an integer number (256742433).

Almost surely, 2^684646486 is an apocalyptic number.

684646486 is a deficient number, since it is larger than the sum of its proper divisors (342323246).

684646486 is a wasteful number, since it uses less digits than its factorization.

684646486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342323245.

The product of its digits is 5308416, while the sum is 52.

The square root of 684646486 is about 26165.7502472220. The cubic root of 684646486 is about 881.3643119423.

The spelling of 684646486 in words is "six hundred eighty-four million, six hundred forty-six thousand, four hundred eighty-six".