689742010 has 8 divisors (see below), whose sum is σ = 1241535636. Its totient is φ = 275896800.

The previous prime is 689742007. The next prime is 689742013. The reversal of 689742010 is 10247986.

It is an interprime number because it is at equal distance from previous prime (689742007) and next prime (689742013).

It can be written as a sum of positive squares in 2 ways, for example, as 633176569 + 56565441 = 25163^2 + 7521^2 .

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

It is not an unprimeable number, because it can be changed into a prime (689742013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34487091 + ... + 34487110.

Almost surely, 2^689742010 is an apocalyptic number.

689742010 is a deficient number, since it is larger than the sum of its proper divisors (551793626).

689742010 is a wasteful number, since it uses less digits than its factorization.

689742010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68974208.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 689742010 is about 26262.9398582870. The cubic root of 689742010 is about 883.5454459963.

Adding to 689742010 its reverse (10247986), we get a palindrome (699989996).

The spelling of 689742010 in words is "six hundred eighty-nine million, seven hundred forty-two thousand, ten".