689737938 has 16 divisors (see below), whose sum is σ = 1439453376. Its totient is φ = 219916400.

The previous prime is 689737883. The next prime is 689737963. The reversal of 689737938 is 839737986.

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, 2498913 + ... + 2499188.

It is an arithmetic number, because the mean of its divisors is an integer number (89965836).

Almost surely, 2^689737938 is an apocalyptic number.

689737938 is an abundant number, since it is smaller than the sum of its proper divisors (749715438).

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

689737938 is a wasteful number, since it uses less digits than its factorization.

689737938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998129.

The product of its digits is 13716864, while the sum is 60.

The square root of 689737938 is about 26262.8623344829. The cubic root of 689737938 is about 883.5437072766.

The spelling of 689737938 in words is "six hundred eighty-nine million, seven hundred thirty-seven thousand, nine hundred thirty-eight".