689490320 has 80 divisors (see below), whose sum is σ = 1700462592. Its totient is φ = 259438080.

The previous prime is 689490287. The next prime is 689490353. The reversal of 689490320 is 23094986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (689490287) and next prime (689490353).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109169 + ... + 115311.

Almost surely, 2^689490320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689490320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850231296).

689490320 is an abundant number, since it is smaller than the sum of its proper divisors (1010972272).

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

689490320 is a wasteful number, since it uses less digits than its factorization.

689490320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240 (or 6234 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 689490320 is about 26258.1476879082. The cubic root of 689490320 is about 883.4379630028.

The spelling of 689490320 in words is "six hundred eighty-nine million, four hundred ninety thousand, three hundred twenty".