689852406 has 32 divisors (see below), whose sum is σ = 1430530560. Its totient is φ = 221516064.

The previous prime is 689852369. The next prime is 689852431. The reversal of 689852406 is 604258986.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76281 + ... + 84843.

It is an arithmetic number, because the mean of its divisors is an integer number (44704080).

Almost surely, 2^689852406 is an apocalyptic number.

689852406 is an abundant number, since it is smaller than the sum of its proper divisors (740678154).

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

689852406 is a wasteful number, since it uses less digits than its factorization.

689852406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9060.

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 689852406 is about 26265.0415190991. The cubic root of 689852406 is about 883.5925818230.

The spelling of 689852406 in words is "six hundred eighty-nine million, eight hundred fifty-two thousand, four hundred six".