689826263 has 12 divisors (see below), whose sum is σ = 810401832. Its totient is φ = 585421200.

The previous prime is 689826259. The next prime is 689826283. The reversal of 689826263 is 362628986.

It is not a de Polignac number, because 689826263 - 2² = 689826259 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 (689826233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64745 + ... + 74642.

It is an arithmetic number, because the mean of its divisors is an integer number (67533486).

Almost surely, 2^689826263 is an apocalyptic number.

689826263 is a deficient number, since it is larger than the sum of its proper divisors (120575569).

689826263 is a wasteful number, since it uses less digits than its factorization.

689826263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139502 (or 139495 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 50.

The square root of 689826263 is about 26264.5438376531. The cubic root of 689826263 is about 883.5814199897.

The spelling of 689826263 in words is "six hundred eighty-nine million, eight hundred twenty-six thousand, two hundred sixty-three".