684616622 has 8 divisors (see below), whose sum is σ = 1087332336. Its totient is φ = 322172512.

The previous prime is 684616613. The next prime is 684616637. The reversal of 684616622 is 226616486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 684616622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10067858 + ... + 10067925.

It is an arithmetic number, because the mean of its divisors is an integer number (135916542).

Almost surely, 2^684616622 is an apocalyptic number.

684616622 is a deficient number, since it is larger than the sum of its proper divisors (402715714).

684616622 is a wasteful number, since it uses less digits than its factorization.

684616622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20135802.

The product of its digits is 165888, while the sum is 41.

The square root of 684616622 is about 26165.1795713311. The cubic root of 684616622 is about 881.3514968389.

The spelling of 684616622 in words is "six hundred eighty-four million, six hundred sixteen thousand, six hundred twenty-two".