689930 has 8 divisors (see below), whose sum is σ = 1241892. Its totient is φ = 275968.

The previous prime is 689929. The next prime is 689951. The reversal of 689930 is 39986.

It can be written as a sum of positive squares in 2 ways, for example, as 638401 + 51529 = 799^2 + 227^2 .

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

It is a nialpdrome in base 15.

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, 34487 + ... + 34506.

2⁶⁸⁹⁹³⁰ is an apocalyptic number.

689930 is a deficient number, since it is larger than the sum of its proper divisors (551962).

689930 is a wasteful number, since it uses less digits than its factorization.

689930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69000.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 689930 is about 830.6202501745. The cubic root of 689930 is about 88.3625709157.

The spelling of 689930 in words is "six hundred eighty-nine thousand, nine hundred thirty".