689342069 has 8 divisors (see below), whose sum is σ = 749719992. Its totient is φ = 630014400.

The previous prime is 689342057. The next prime is 689342081. The reversal of 689342069 is 960243986.

It is an interprime number because it is at equal distance from previous prime (689342057) and next prime (689342081).

It can be written as a sum of positive squares in 4 ways, for example, as 223861444 + 465480625 = 14962^2 + 21575^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 689342069 - 2¹² = 689337973 is a prime.

It is a super-2 number, since 2×689342069² = 950384976186401522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689342369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261194 + ... + 263819.

It is an arithmetic number, because the mean of its divisors is an integer number (93714999).

Almost surely, 2^689342069 is an apocalyptic number.

It is an amenable number.

689342069 is a deficient number, since it is larger than the sum of its proper divisors (60377923).

689342069 is a wasteful number, since it uses less digits than its factorization.

689342069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525127.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 689342069 is about 26255.3245837868. The cubic root of 689342069 is about 883.3746408910.

The spelling of 689342069 in words is "six hundred eighty-nine million, three hundred forty-two thousand, sixty-nine".