690235 has 32 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 414720.

The previous prime is 690233. The next prime is 690259. The reversal of 690235 is 532096.

It is not a de Polignac number, because 690235 - 2¹ = 690233 is a prime.

690235 is a lucky number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (690233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16815 + ... + 16855.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2⁶⁹⁰²³⁵ is an apocalyptic number.

690235 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

690235 is a deficient number, since it is larger than the sum of its proper divisors (382277).

690235 is a wasteful number, since it uses less digits than its factorization.

690235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 690235 is about 830.8038276272. The cubic root of 690235 is about 88.3755899242.

The spelling of 690235 in words is "six hundred ninety thousand, two hundred thirty-five".