680092909 has 4 divisors (see below), whose sum is σ = 688701760. Its totient is φ = 671484060.

The previous prime is 680092901. The next prime is 680092921. The reversal of 680092909 is 909290086.

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, and also an emirpimes, since its reverse is a distinct semiprime: 909290086 = 2 ⋅454645043.

It is a cyclic number.

It is not a de Polignac number, because 680092909 - 2³ = 680092901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680092901) 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, 4304307 + ... + 4304464.

It is an arithmetic number, because the mean of its divisors is an integer number (172175440).

Almost surely, 2^680092909 is an apocalyptic number.

It is an amenable number.

680092909 is a deficient number, since it is larger than the sum of its proper divisors (8608851).

680092909 is an equidigital number, since it uses as much as digits as its factorization.

680092909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8608850.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 680092909 is about 26078.5910087182. The cubic root of 680092909 is about 879.4059821223.

The spelling of 680092909 in words is "six hundred eighty million, ninety-two thousand, nine hundred nine".