689750043 has 8 divisors (see below), whose sum is σ = 921350208. Its totient is φ = 458991624.

The previous prime is 689750029. The next prime is 689750071. The reversal of 689750043 is 340057986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 689750043 - 2⁶ = 689749979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689749977 and 689750004.

It is not an unprimeable number, because it can be changed into a prime (689750023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208521 + ... + 211802.

It is an arithmetic number, because the mean of its divisors is an integer number (115168776).

Almost surely, 2^689750043 is an apocalyptic number.

689750043 is a deficient number, since it is larger than the sum of its proper divisors (231600165).

689750043 is a wasteful number, since it uses less digits than its factorization.

689750043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420873.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 689750043 is about 26263.0927919771. The cubic root of 689750043 is about 883.5488760194.

The spelling of 689750043 in words is "six hundred eighty-nine million, seven hundred fifty thousand, forty-three".