689893870 has 16 divisors (see below), whose sum is σ = 1242300240. Its totient is φ = 275848384.

The previous prime is 689893861. The next prime is 689893877. The reversal of 689893870 is 78398986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689893877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15954 + ... + 40426.

It is an arithmetic number, because the mean of its divisors is an integer number (77643765).

Almost surely, 2^689893870 is an apocalyptic number.

689893870 is a deficient number, since it is larger than the sum of its proper divisors (552406370).

689893870 is a wasteful number, since it uses less digits than its factorization.

689893870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27299.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 689893870 is about 26265.8308454159. The cubic root of 689893870 is about 883.6102844255.

The spelling of 689893870 in words is "six hundred eighty-nine million, eight hundred ninety-three thousand, eight hundred seventy".