682209138 has 16 divisors (see below), whose sum is σ = 1469373696. Its totient is φ = 209910480.

The previous prime is 682209131. The next prime is 682209169. The reversal of 682209138 is 831902286.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 682209096 and 682209105.

It is not an unprimeable number, because it can be changed into a prime (682209131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4373058 + ... + 4373213.

It is an arithmetic number, because the mean of its divisors is an integer number (91835856).

Almost surely, 2^682209138 is an apocalyptic number.

682209138 is an abundant number, since it is smaller than the sum of its proper divisors (787164558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

682209138 is a wasteful number, since it uses less digits than its factorization.

682209138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746289.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 682209138 is about 26119.1335614335. The cubic root of 682209138 is about 880.3171799139.

The spelling of 682209138 in words is "six hundred eighty-two million, two hundred nine thousand, one hundred thirty-eight".