689852019 has 16 divisors (see below), whose sum is σ = 991831680. Its totient is φ = 425067840.

The previous prime is 689852003. The next prime is 689852071. The reversal of 689852019 is 910258986.

It is a happy number.

It is not a de Polignac number, because 689852019 - 2⁴ = 689852003 is a prime.

It is a super-2 number, since 2×689852019² = 951791616236752722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689852519) 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, 145257 + ... + 149930.

It is an arithmetic number, because the mean of its divisors is an integer number (61989480).

Almost surely, 2^689852019 is an apocalyptic number.

689852019 is a deficient number, since it is larger than the sum of its proper divisors (301979661).

689852019 is a wasteful number, since it uses less digits than its factorization.

689852019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295250.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 689852019 is about 26265.0341518910. The cubic root of 689852019 is about 883.5924165943.

The spelling of 689852019 in words is "six hundred eighty-nine million, eight hundred fifty-two thousand, nineteen".