680694082 has 4 divisors (see below), whose sum is σ = 1021041126. Its totient is φ = 340347040.

The previous prime is 680694029. The next prime is 680694083. The reversal of 680694082 is 280496086.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 674388961 + 6305121 = 25969^2 + 2511^2 .

It is not an unprimeable number, because it can be changed into a prime (680694083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170173519 + ... + 170173522.

Almost surely, 2^680694082 is an apocalyptic number.

680694082 is a deficient number, since it is larger than the sum of its proper divisors (340347044).

680694082 is a wasteful number, since it uses less digits than its factorization.

680694082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340347043.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 680694082 is about 26090.1146413733. The cubic root of 680694082 is about 879.6650248827.

The spelling of 680694082 in words is "six hundred eighty million, six hundred ninety-four thousand, eighty-two".