689475261 has 16 divisors (see below), whose sum is σ = 955180800. Its totient is φ = 441849408.

The previous prime is 689475223. The next prime is 689475271. The reversal of 689475261 is 162574986.

689475261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 689475261 - 2⁶ = 689475197 is a prime.

It is a super-2 number, since 2×689475261² = 950752271062036242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689475261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689475271) 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, 2620 + ... + 37226.

It is an arithmetic number, because the mean of its divisors is an integer number (59698800).

Almost surely, 2^689475261 is an apocalyptic number.

It is an amenable number.

689475261 is a deficient number, since it is larger than the sum of its proper divisors (265705539).

689475261 is a wasteful number, since it uses less digits than its factorization.

689475261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34868.

The product of its digits is 725760, while the sum is 48.

The square root of 689475261 is about 26257.8609372508. The cubic root of 689475261 is about 883.4315313006.

The spelling of 689475261 in words is "six hundred eighty-nine million, four hundred seventy-five thousand, two hundred sixty-one".