689140516 has 6 divisors (see below), whose sum is σ = 1205995910. Its totient is φ = 344570256.

The previous prime is 689140511. The next prime is 689140537. The reversal of 689140516 is 615041986.

It can be written as a sum of positive squares in only one way, i.e., 675480100 + 13660416 = 25990^2 + 3696^2 .

It is not an unprimeable number, because it can be changed into a prime (689140511) 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 as a sum of consecutive naturals, namely, 86142561 + ... + 86142568.

Almost surely, 2^689140516 is an apocalyptic number.

It is an amenable number.

689140516 is a deficient number, since it is larger than the sum of its proper divisors (516855394).

689140516 is a wasteful number, since it uses less digits than its factorization.

689140516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172285133 (or 172285131 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 689140516 is about 26251.4859769880. The cubic root of 689140516 is about 883.2885374538.

The spelling of 689140516 in words is "six hundred eighty-nine million, one hundred forty thousand, five hundred sixteen".