680354205 has 16 divisors (see below), whose sum is σ = 1115118144. Its totient is φ = 354005120.

The previous prime is 680354201. The next prime is 680354209. The reversal of 680354205 is 502453086.

It is an interprime number because it is at equal distance from previous prime (680354201) and next prime (680354209).

It is not a de Polignac number, because 680354205 - 2² = 680354201 is a prime.

It is a super-2 number, since 2×680354205² = 925763688522364050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680354201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552519 + ... + 553748.

It is an arithmetic number, because the mean of its divisors is an integer number (69694884).

Almost surely, 2^680354205 is an apocalyptic number.

It is an amenable number.

680354205 is a deficient number, since it is larger than the sum of its proper divisors (434763939).

680354205 is a wasteful number, since it uses less digits than its factorization.

680354205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106316.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 680354205 is about 26083.6003074729. The cubic root of 680354205 is about 879.5185921497.

The spelling of 680354205 in words is "six hundred eighty million, three hundred fifty-four thousand, two hundred five".