606690 has 80 divisors (see below), whose sum is σ = 1881792. Its totient is φ = 137376.

The previous prime is 606673. The next prime is 606721. The reversal of 606690 is 96606.

It is a super-2 number, since 2×606690² = 736145512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5617 + ... + 5723.

2⁶⁰⁶⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 606690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940896).

606690 is an abundant number, since it is smaller than the sum of its proper divisors (1275102).

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

606690 is a wasteful number, since it uses less digits than its factorization.

606690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 606690 is about 778.9030748431. The cubic root of 606690 is about 84.6555844162.

It can be divided in two parts, 606 and 690, that added together give a 4-th power (1296 = 6⁴).

The spelling of 606690 in words is "six hundred six thousand, six hundred ninety".