689054013 has 16 divisors (see below), whose sum is σ = 1080869760. Its totient is φ = 432347328.

The previous prime is 689053993. The next prime is 689054021. The reversal of 689054013 is 310450986.

It is a de Polignac number, because none of the positive numbers 2^k-689054013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689054053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750145 + ... + 751062.

It is an arithmetic number, because the mean of its divisors is an integer number (67554360).

Almost surely, 2^689054013 is an apocalyptic number.

It is an amenable number.

689054013 is a deficient number, since it is larger than the sum of its proper divisors (391815747).

689054013 is a wasteful number, since it uses less digits than its factorization.

689054013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501233 (or 1501227 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 689054013 is about 26249.8383423594. The cubic root of 689054013 is about 883.2515782253.

It can be divided in two parts, 68 and 9054013, that added together give a square (9054081 = 3009²).

The spelling of 689054013 in words is "six hundred eighty-nine million, fifty-four thousand, thirteen".