684412431 has 8 divisors (see below), whose sum is σ = 915845424. Its totient is φ = 454627200.

The previous prime is 684412427. The next prime is 684412447. The reversal of 684412431 is 134214486.

684412431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 684412431 - 2² = 684412427 is a prime.

It is a super-2 number, since 2×684412431² = 936840751414659522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 684412392 and 684412401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684412831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410970 + ... + 412631.

It is an arithmetic number, because the mean of its divisors is an integer number (114480678).

Almost surely, 2^684412431 is an apocalyptic number.

684412431 is a deficient number, since it is larger than the sum of its proper divisors (231432993).

684412431 is a wasteful number, since it uses less digits than its factorization.

684412431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823881.

The product of its digits is 18432, while the sum is 33.

The square root of 684412431 is about 26161.2773197335. The cubic root of 684412431 is about 881.2638653419.

The spelling of 684412431 in words is "six hundred eighty-four million, four hundred twelve thousand, four hundred thirty-one".