689851412 has 24 divisors (see below), whose sum is σ = 1224230112. Its totient is φ = 340100000.

The previous prime is 689851403. The next prime is 689851441. The reversal of 689851412 is 214158986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98003 + ... + 104805.

It is an arithmetic number, because the mean of its divisors is an integer number (51009588).

Almost surely, 2^689851412 is an apocalyptic number.

It is an amenable number.

689851412 is a deficient number, since it is larger than the sum of its proper divisors (534378700).

689851412 is a wasteful number, since it uses less digits than its factorization.

689851412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159 (or 7157 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 689851412 is about 26265.0225966017. The cubic root of 689851412 is about 883.5921574369.

The spelling of 689851412 in words is "six hundred eighty-nine million, eight hundred fifty-one thousand, four hundred twelve".