689910486 has 16 divisors (see below), whose sum is σ = 1392481200. Its totient is φ = 227860128.

The previous prime is 689910469. The next prime is 689910499. The reversal of 689910486 is 684019986.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526801 + ... + 528108.

It is an arithmetic number, because the mean of its divisors is an integer number (87030075).

Almost surely, 2^689910486 is an apocalyptic number.

689910486 is an abundant number, since it is smaller than the sum of its proper divisors (702570714).

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

689910486 is a wasteful number, since it uses less digits than its factorization.

689910486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055023.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 689910486 is about 26266.1471479926. The cubic root of 689910486 is about 883.6173782464.

The spelling of 689910486 in words is "six hundred eighty-nine million, nine hundred ten thousand, four hundred eighty-six".