684087106 has 16 divisors (see below), whose sum is σ = 1121541120. Its totient is φ = 311538240.

The previous prime is 684087101. The next prime is 684087113. The reversal of 684087106 is 601780486.

It is not an unprimeable number, because it can be changed into a prime (684087101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323466 + ... + 325573.

It is an arithmetic number, because the mean of its divisors is an integer number (70096320).

Almost surely, 2^684087106 is an apocalyptic number.

684087106 is a deficient number, since it is larger than the sum of its proper divisors (437454014).

684087106 is a wasteful number, since it uses less digits than its factorization.

684087106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649089.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 684087106 is about 26155.0588988058. The cubic root of 684087106 is about 881.1242114375.

The spelling of 684087106 in words is "six hundred eighty-four million, eighty-seven thousand, one hundred six".