689773953 has 8 divisors (see below), whose sum is σ = 1003307616. Its totient is φ = 418044800.

The previous prime is 689773951. The next prime is 689773969. The reversal of 689773953 is 359377986.

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 689773953 - 2¹ = 689773951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689773893 and 689773902.

It is not an unprimeable number, because it can be changed into a prime (689773951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10451088 + ... + 10451153.

It is an arithmetic number, because the mean of its divisors is an integer number (125413452).

Almost surely, 2^689773953 is an apocalyptic number.

It is an amenable number.

689773953 is a deficient number, since it is larger than the sum of its proper divisors (313533663).

689773953 is a wasteful number, since it uses less digits than its factorization.

689773953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20902255.

The product of its digits is 8573040, while the sum is 57.

The square root of 689773953 is about 26263.5479895615. The cubic root of 689773953 is about 883.5590852296.

The spelling of 689773953 in words is "six hundred eighty-nine million, seven hundred seventy-three thousand, nine hundred fifty-three".