689313277 has 8 divisors (see below), whose sum is σ = 697689720. Its totient is φ = 680951040.

The previous prime is 689313271. The next prime is 689313301. The reversal of 689313277 is 772313986.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 426257316 + 263055961 = 20646^2 + 16219^2 .

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 689313277 - 2¹⁵ = 689280509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689313271) 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, 119377 + ... + 125017.

It is an arithmetic number, because the mean of its divisors is an integer number (87211215).

Almost surely, 2^689313277 is an apocalyptic number.

It is an amenable number.

689313277 is a deficient number, since it is larger than the sum of its proper divisors (8376443).

689313277 is a wasteful number, since it uses less digits than its factorization.

689313277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103.

The product of its digits is 381024, while the sum is 46.

The square root of 689313277 is about 26254.7762702332. The cubic root of 689313277 is about 883.3623419768.

The spelling of 689313277 in words is "six hundred eighty-nine million, three hundred thirteen thousand, two hundred seventy-seven".