689420919 has 16 divisors (see below), whose sum is σ = 1004307840. Its totient is φ = 417200160.

The previous prime is 689420917. The next prime is 689420939. The reversal of 689420919 is 919024986.

It is not a de Polignac number, because 689420919 - 2¹ = 689420917 is a prime.

It is a super-2 number, since 2×689420919² = 950602407109609122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689420911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6912 + ... + 37770.

It is an arithmetic number, because the mean of its divisors is an integer number (62769240).

Almost surely, 2^689420919 is an apocalyptic number.

689420919 is a deficient number, since it is larger than the sum of its proper divisors (314886921).

689420919 is a wasteful number, since it uses less digits than its factorization.

689420919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31550.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 689420919 is about 26256.8261410247. The cubic root of 689420919 is about 883.4083210419.

The spelling of 689420919 in words is "six hundred eighty-nine million, four hundred twenty thousand, nine hundred nineteen".