689750986 has 8 divisors (see below), whose sum is σ = 1034820864. Its totient is φ = 344810700.

The previous prime is 689750981. The next prime is 689750987. The reversal of 689750986 is 689057986.

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

It is a self number, because there is not a number n which added to its sum of digits gives 689750986.

It is not an unprimeable number, because it can be changed into a prime (689750981) 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, 17770 + ... + 41173.

It is an arithmetic number, because the mean of its divisors is an integer number (129352608).

Almost surely, 2^689750986 is an apocalyptic number.

689750986 is a deficient number, since it is larger than the sum of its proper divisors (345069878).

689750986 is a wasteful number, since it uses less digits than its factorization.

689750986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64796.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The square root of 689750986 is about 26263.1107449213. The cubic root of 689750986 is about 883.5492786706.

The spelling of 689750986 in words is "six hundred eighty-nine million, seven hundred fifty thousand, nine hundred eighty-six".