684767055 has 32 divisors (see below), whose sum is σ = 1325804544. Its totient is φ = 294621696.

The previous prime is 684767047. The next prime is 684767059. The reversal of 684767055 is 550767486.

It is not a de Polignac number, because 684767055 - 2³ = 684767047 is a prime.

It is a super-2 number, since 2×684767055² = 937811839226746050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 684766995 and 684767013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684767059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190027 + ... + 193596.

It is an arithmetic number, because the mean of its divisors is an integer number (41431392).

Almost surely, 2^684767055 is an apocalyptic number.

684767055 is a deficient number, since it is larger than the sum of its proper divisors (641037489).

684767055 is a wasteful number, since it uses less digits than its factorization.

684767055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383655.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The square root of 684767055 is about 26168.0540927292. The cubic root of 684767055 is about 881.4160461723.

The spelling of 684767055 in words is "six hundred eighty-four million, seven hundred sixty-seven thousand, fifty-five".