684911689490 has 32 divisors (see below), whose sum is σ = 1408999069440. Its totient is φ = 234820551744.

The previous prime is 684911689471. The next prime is 684911689523. The reversal of 684911689490 is 94986119486.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3029624 + ... + 3247836.

It is an arithmetic number, because the mean of its divisors is an integer number (44031220920).

Almost surely, 2^684911689490 is an apocalyptic number.

684911689490 is an abundant number, since it is smaller than the sum of its proper divisors (724087379950).

684911689490 is a wasteful number, since it uses less digits than its factorization.

684911689490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263066.

The product of its (nonzero) digits is 26873856, while the sum is 65.

The spelling of 684911689490 in words is "six hundred eighty-four billion, nine hundred eleven million, six hundred eighty-nine thousand, four hundred ninety".