689168379 has 16 divisors (see below), whose sum is σ = 944686080. Its totient is φ = 446678400.

The previous prime is 689168377. The next prime is 689168393. The reversal of 689168379 is 973861986.

It is not a de Polignac number, because 689168379 - 2¹ = 689168377 is a prime.

It is a super-2 number, since 2×689168379² = 949906109226975282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689168371) 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, 5107 + ... + 37475.

It is an arithmetic number, because the mean of its divisors is an integer number (59042880).

Almost surely, 2^689168379 is an apocalyptic number.

689168379 is a deficient number, since it is larger than the sum of its proper divisors (255517701).

689168379 is a wasteful number, since it uses less digits than its factorization.

689168379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32570.

The product of its digits is 3919104, while the sum is 57.

The square root of 689168379 is about 26252.0166653916. The cubic root of 689168379 is about 883.3004415267.

The spelling of 689168379 in words is "six hundred eighty-nine million, one hundred sixty-eight thousand, three hundred seventy-nine".