689238766 has 8 divisors (see below), whose sum is σ = 1069508520. Its totient is φ = 332735928.

The previous prime is 689238733. The next prime is 689238793. The reversal of 689238766 is 667832986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5941656 + ... + 5941771.

It is an arithmetic number, because the mean of its divisors is an integer number (133688565).

Almost surely, 2^689238766 is an apocalyptic number.

689238766 is a deficient number, since it is larger than the sum of its proper divisors (380269754).

689238766 is a wasteful number, since it uses less digits than its factorization.

689238766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11883458.

The product of its digits is 5225472, while the sum is 55.

The square root of 689238766 is about 26253.3572329331. The cubic root of 689238766 is about 883.3305119486.

The spelling of 689238766 in words is "six hundred eighty-nine million, two hundred thirty-eight thousand, seven hundred sixty-six".