689514164 has 6 divisors (see below), whose sum is σ = 1206649794. Its totient is φ = 344757080.

The previous prime is 689514149. The next prime is 689514167. The reversal of 689514164 is 461415986.

It can be written as a sum of positive squares in only one way, i.e., 449016100 + 240498064 = 21190^2 + 15508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689514167) 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, 86189267 + ... + 86189274.

It is an arithmetic number, because the mean of its divisors is an integer number (201108299).

Almost surely, 2^689514164 is an apocalyptic number.

It is an amenable number.

689514164 is a deficient number, since it is larger than the sum of its proper divisors (517135630).

689514164 is a wasteful number, since it uses less digits than its factorization.

689514164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172378545 (or 172378543 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 689514164 is about 26258.6017144859. The cubic root of 689514164 is about 883.4481465888.

The spelling of 689514164 in words is "six hundred eighty-nine million, five hundred fourteen thousand, one hundred sixty-four".