690085 has 8 divisors (see below), whose sum is σ = 903456. Its totient is φ = 501840.

The previous prime is 690073. The next prime is 690089. The reversal of 690085 is 580096.

690085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 690085 - 2⁷ = 689957 is a prime.

It is a Duffinian number.

690085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690089) 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, 6219 + ... + 6328.

It is an arithmetic number, because the mean of its divisors is an integer number (112932).

2⁶⁹⁰⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

690085 is a deficient number, since it is larger than the sum of its proper divisors (213371).

690085 is a wasteful number, since it uses less digits than its factorization.

690085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12563.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 690085 is about 830.7135487038. The cubic root of 690085 is about 88.3691876125.

The spelling of 690085 in words is "six hundred ninety thousand, eighty-five".