684132369 has 4 divisors (see below), whose sum is σ = 912176496. Its totient is φ = 456088244.

The previous prime is 684132347. The next prime is 684132419. The reversal of 684132369 is 963231486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 684132369 - 2⁹ = 684131857 is a prime.

It is a super-2 number, since 2×684132369² = 936074196627104322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 684132369.

It is not an unprimeable number, because it can be changed into a prime (684132469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114022059 + ... + 114022064.

It is an arithmetic number, because the mean of its divisors is an integer number (228044124).

Almost surely, 2^684132369 is an apocalyptic number.

It is an amenable number.

684132369 is a deficient number, since it is larger than the sum of its proper divisors (228044127).

684132369 is a wasteful number, since it uses less digits than its factorization.

684132369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228044126.

The product of its digits is 186624, while the sum is 42.

The square root of 684132369 is about 26155.9241664293. The cubic root of 684132369 is about 881.1436443651.

The spelling of 684132369 in words is "six hundred eighty-four million, one hundred thirty-two thousand, three hundred sixty-nine".