684264427 has 8 divisors (see below), whose sum is σ = 853108992. Its totient is φ = 533193000.

The previous prime is 684264419. The next prime is 684264439. The reversal of 684264427 is 724462486.

684264427 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 a cyclic number.

It is not a de Polignac number, because 684264427 - 2³ = 684264419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684264227) 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, 4443199 + ... + 4443352.

It is an arithmetic number, because the mean of its divisors is an integer number (106638624).

Almost surely, 2^684264427 is an apocalyptic number.

684264427 is a deficient number, since it is larger than the sum of its proper divisors (168844565).

684264427 is a wasteful number, since it uses less digits than its factorization.

684264427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886569.

The product of its digits is 516096, while the sum is 43.

The square root of 684264427 is about 26158.4484822781. The cubic root of 684264427 is about 881.2003364062.

The spelling of 684264427 in words is "six hundred eighty-four million, two hundred sixty-four thousand, four hundred twenty-seven".