689190612 has 48 divisors (see below), whose sum is σ = 1759622592. Its totient is φ = 208212480.

The previous prime is 689190611. The next prime is 689190637. The reversal of 689190612 is 216091986.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689190611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36738 + ... + 52230.

It is an arithmetic number, because the mean of its divisors is an integer number (36658804).

Almost surely, 2^689190612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689190612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879811296).

689190612 is an abundant number, since it is smaller than the sum of its proper divisors (1070431980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689190612 is a wasteful number, since it uses less digits than its factorization.

689190612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15848 (or 15846 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 689190612 is about 26252.4401151588. The cubic root of 689190612 is about 883.3099400316.

The spelling of 689190612 in words is "six hundred eighty-nine million, one hundred ninety thousand, six hundred twelve".