689498245 has 8 divisors (see below), whose sum is σ = 832951800. Its totient is φ = 547896000.

The previous prime is 689498207. The next prime is 689498261. The reversal of 689498245 is 542894986.

It can be written as a sum of positive squares in 4 ways, for example, as 8444836 + 681053409 = 2906^2 + 26097^2 .

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

It is not a de Polignac number, because 689498245 - 2¹⁵ = 689465477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462006 + ... + 463495.

It is an arithmetic number, because the mean of its divisors is an integer number (104118975).

Almost surely, 2^689498245 is an apocalyptic number.

It is an amenable number.

689498245 is a deficient number, since it is larger than the sum of its proper divisors (143453555).

689498245 is a wasteful number, since it uses less digits than its factorization.

689498245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925655.

The product of its digits is 4976640, while the sum is 55.

The square root of 689498245 is about 26258.2985930163. The cubic root of 689498245 is about 883.4413477344.

The spelling of 689498245 in words is "six hundred eighty-nine million, four hundred ninety-eight thousand, two hundred forty-five".