684505426 has 8 divisors (see below), whose sum is σ = 1120099824. Its totient is φ = 311138820.

The previous prime is 684505397. The next prime is 684505427. The reversal of 684505426 is 624505486.

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

It is not an unprimeable number, because it can be changed into a prime (684505427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15556920 + ... + 15556963.

It is an arithmetic number, because the mean of its divisors is an integer number (140012478).

Almost surely, 2^684505426 is an apocalyptic number.

684505426 is a deficient number, since it is larger than the sum of its proper divisors (435594398).

684505426 is a wasteful number, since it uses less digits than its factorization.

684505426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31113896.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 684505426 is about 26163.0545999507. The cubic root of 684505426 is about 881.3037776414.

The spelling of 684505426 in words is "six hundred eighty-four million, five hundred five thousand, four hundred twenty-six".