689731036 has 12 divisors (see below), whose sum is σ = 1209899320. Its totient is φ = 344045520.

The previous prime is 689731033. The next prime is 689731037. The reversal of 689731036 is 630137986.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 689730983 and 689731001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689731033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203106 + ... + 206473.

Almost surely, 2^689731036 is an apocalyptic number.

It is an amenable number.

689731036 is a deficient number, since it is larger than the sum of its proper divisors (520168284).

689731036 is a wasteful number, since it uses less digits than its factorization.

689731036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410004 (or 410002 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 689731036 is about 26262.7309318738. The cubic root of 689731036 is about 883.5407601480.

The spelling of 689731036 in words is "six hundred eighty-nine million, seven hundred thirty-one thousand, thirty-six".