690146 has 8 divisors (see below), whose sum is σ = 1040364. Its totient is φ = 343360.

The previous prime is 690143. The next prime is 690163. The reversal of 690146 is 641096.

690146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 25921 = 815^2 + 161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (690143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275 + ... + 1206.

2⁶⁹⁰¹⁴⁶ is an apocalyptic number.

690146 is a deficient number, since it is larger than the sum of its proper divisors (350218).

690146 is a wasteful number, since it uses less digits than its factorization.

690146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 690146 is about 830.7502633162. The cubic root of 690146 is about 88.3717913312.

The spelling of 690146 in words is "six hundred ninety thousand, one hundred forty-six".