689699994 has 8 divisors (see below), whose sum is σ = 1379400000. Its totient is φ = 229899996.

The previous prime is 689699963. The next prime is 689700001. The reversal of 689699994 is 499996986.

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

689699994 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57474994 + ... + 57475005.

It is an arithmetic number, because the mean of its divisors is an integer number (172425000).

Almost surely, 2^689699994 is an apocalyptic number.

689699994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

689699994 is a wasteful number, since it uses less digits than its factorization.

689699994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114950004.

The product of its digits is 68024448, while the sum is 69.

The square root of 689699994 is about 26262.1399356564. The cubic root of 689699994 is about 883.5275050857.

The spelling of 689699994 in words is "six hundred eighty-nine million, six hundred ninety-nine thousand, nine hundred ninety-four".