684230811 has 8 divisors (see below), whose sum is σ = 995244864. Its totient is φ = 414685320.

The previous prime is 684230801. The next prime is 684230857. The reversal of 684230811 is 118032486.

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

It is not a de Polignac number, because 684230811 - 2⁷ = 684230683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 20734267 = 684230811 / (6 + 8 + 4 + 2 + 3 + 0 + 8 + 1 + 1).

It is not an unprimeable number, because it can be changed into a prime (684230801) 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, 10367101 + ... + 10367166.

It is an arithmetic number, because the mean of its divisors is an integer number (124405608).

Almost surely, 2^684230811 is an apocalyptic number.

684230811 is a deficient number, since it is larger than the sum of its proper divisors (311014053).

684230811 is a wasteful number, since it uses less digits than its factorization.

684230811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734281.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 684230811 is about 26157.8059286325. The cubic root of 684230811 is about 881.1859058661.

The spelling of 684230811 in words is "six hundred eighty-four million, two hundred thirty thousand, eight hundred eleven".