689773500 has 216 divisors, whose sum is σ = 2358864144. Its totient is φ = 169603200.

The previous prime is 689773481. The next prime is 689773507. The reversal of 689773500 is 5377986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689773507) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 760047 + ... + 760953.

Almost surely, 2^689773500 is an apocalyptic number.

689773500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689773500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179432072).

689773500 is an abundant number, since it is smaller than the sum of its proper divisors (1669090644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689773500 is a wasteful number, since it uses less digits than its factorization.

689773500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 689773500 is about 26263.5393654397. The cubic root of 689773500 is about 883.5588918076.

The spelling of 689773500 in words is "six hundred eighty-nine million, seven hundred seventy-three thousand, five hundred".