684420411 has 8 divisors (see below), whose sum is σ = 912732480. Its totient is φ = 456194312.

The previous prime is 684420409. The next prime is 684420431. The reversal of 684420411 is 114024486.

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

It is a cyclic number.

It is not a de Polignac number, because 684420411 - 2¹ = 684420409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684420431) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 220 + ... + 36998.

It is an arithmetic number, because the mean of its divisors is an integer number (114091560).

Almost surely, 2^684420411 is an apocalyptic number.

684420411 is a deficient number, since it is larger than the sum of its proper divisors (228312069).

684420411 is a wasteful number, since it uses less digits than its factorization.

684420411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42985.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 684420411 is about 26161.4298347778. The cubic root of 684420411 is about 881.2672904007.

Adding to 684420411 its reverse (114024486), we get a palindrome (798444897).

The spelling of 684420411 in words is "six hundred eighty-four million, four hundred twenty thousand, four hundred eleven".