689424814 has 16 divisors (see below), whose sum is σ = 1119525120. Its totient is φ = 316527840.

The previous prime is 689424803. The next prime is 689424871. The reversal of 689424814 is 418424986.

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, 64449 + ... + 74380.

It is an arithmetic number, because the mean of its divisors is an integer number (69970320).

Almost surely, 2^689424814 is an apocalyptic number.

689424814 is a deficient number, since it is larger than the sum of its proper divisors (430100306).

689424814 is a wasteful number, since it uses less digits than its factorization.

689424814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139035.

The product of its digits is 442368, while the sum is 46.

The square root of 689424814 is about 26256.9003121084. The cubic root of 689424814 is about 883.4099846937.

It can be divided in two parts, 689 and 424814, that added together give a triangular number (425503 = T₉₂₂).

The spelling of 689424814 in words is "six hundred eighty-nine million, four hundred twenty-four thousand, eight hundred fourteen".