689299760 has 20 divisors (see below), whose sum is σ = 1602622128. Its totient is φ = 275719872.

The previous prime is 689299733. The next prime is 689299763. The reversal of 689299760 is 67992986.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 689299696 and 689299705.

It is not an unprimeable number, because it can be changed into a prime (689299763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308044 + ... + 4308203.

Almost surely, 2^689299760 is an apocalyptic number.

It is an amenable number.

689299760 is an abundant number, since it is smaller than the sum of its proper divisors (913322368).

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

689299760 is a wasteful number, since it uses less digits than its factorization.

689299760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616260 (or 8616254 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 689299760 is about 26254.5188491429. The cubic root of 689299760 is about 883.3565678790.

The spelling of 689299760 in words is "six hundred eighty-nine million, two hundred ninety-nine thousand, seven hundred sixty".