680841401 has 4 divisors (see below), whose sum is σ = 680992500. Its totient is φ = 680690304.

The previous prime is 680841397. The next prime is 680841431. The reversal of 680841401 is 104148086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 600201001 + 80640400 = 24499^2 + 8980^2 .

It is a cyclic number.

It is not a de Polignac number, because 680841401 - 2² = 680841397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680841431) 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 3 ways as a sum of consecutive naturals, for example, 68576 + ... + 77873.

It is an arithmetic number, because the mean of its divisors is an integer number (170248125).

Almost surely, 2^680841401 is an apocalyptic number.

It is an amenable number.

680841401 is a deficient number, since it is larger than the sum of its proper divisors (151099).

680841401 is a wasteful number, since it uses less digits than its factorization.

680841401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151098.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 680841401 is about 26092.9377610111. The cubic root of 680841401 is about 879.7284807128.

Adding to 680841401 its reverse (104148086), we get a palindrome (784989487).

The spelling of 680841401 in words is "six hundred eighty million, eight hundred forty-one thousand, four hundred one".