689802082 has 4 divisors (see below), whose sum is σ = 1034703126. Its totient is φ = 344901040.

The previous prime is 689802079. The next prime is 689802083. The reversal of 689802082 is 280208986.

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., 687016521 + 2785561 = 26211^2 + 1669^2 .

It is not an unprimeable number, because it can be changed into a prime (689802083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172450519 + ... + 172450522.

Almost surely, 2^689802082 is an apocalyptic number.

689802082 is a deficient number, since it is larger than the sum of its proper divisors (344901044).

689802082 is a wasteful number, since it uses less digits than its factorization.

689802082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344901043.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 689802082 is about 26264.0834981920. The cubic root of 689802082 is about 883.5710955872.

The spelling of 689802082 in words is "six hundred eighty-nine million, eight hundred two thousand, eighty-two".