684275091 has 8 divisors (see below), whose sum is σ = 912787920. Its totient is φ = 455972832.

The previous prime is 684275083. The next prime is 684275107. The reversal of 684275091 is 190572486.

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

It is not a de Polignac number, because 684275091 - 2³ = 684275083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (684275051) 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, 44896 + ... + 58173.

It is an arithmetic number, because the mean of its divisors is an integer number (114098490).

Almost surely, 2^684275091 is an apocalyptic number.

684275091 is a deficient number, since it is larger than the sum of its proper divisors (228512829).

684275091 is a wasteful number, since it uses less digits than its factorization.

684275091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105285.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 684275091 is about 26158.6523162031. The cubic root of 684275091 is about 881.2049141060.

The spelling of 684275091 in words is "six hundred eighty-four million, two hundred seventy-five thousand, ninety-one".