680020238 has 4 divisors (see below), whose sum is σ = 1020030360. Its totient is φ = 340010118.

The previous prime is 680020193. The next prime is 680020249. The reversal of 680020238 is 832020086.

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

It is a self number, because there is not a number n which added to its sum of digits gives 680020238.

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, 170005058 + ... + 170005061.

It is an arithmetic number, because the mean of its divisors is an integer number (255007590).

Almost surely, 2^680020238 is an apocalyptic number.

680020238 is a deficient number, since it is larger than the sum of its proper divisors (340010122).

680020238 is a wasteful number, since it uses less digits than its factorization.

680020238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340010121.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 680020238 is about 26077.1976638595. The cubic root of 680020238 is about 879.3746581724.

The spelling of 680020238 in words is "six hundred eighty million, twenty thousand, two hundred thirty-eight".