680902 has 4 divisors (see below), whose sum is σ = 1021356. Its totient is φ = 340450.

The previous prime is 680881. The next prime is 680917. The reversal of 680902 is 209086.

680902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209086 = 2 ⋅104543.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170224 + ... + 170227.

It is an arithmetic number, because the mean of its divisors is an integer number (255339).

2⁶⁸⁰⁹⁰² is an apocalyptic number.

680902 is a deficient number, since it is larger than the sum of its proper divisors (340454).

680902 is a wasteful number, since it uses less digits than its factorization.

680902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340453.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 680902 is about 825.1678617106. The cubic root of 680902 is about 87.9754580323.

Adding to 680902 its reverse (209086), we get a palindrome (889988).

It can be divided in two parts, 6 and 80902, that added together give a palindrome (80908).

The spelling of 680902 in words is "six hundred eighty thousand, nine hundred two".