690065 has 8 divisors (see below), whose sum is σ = 839040. Its totient is φ = 544752.

The previous prime is 690059. The next prime is 690073. The reversal of 690065 is 560096.

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

It is a cyclic number.

It is not a de Polignac number, because 690065 - 2¹⁰ = 689041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (104880).

2⁶⁹⁰⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

690065 is a deficient number, since it is larger than the sum of its proper divisors (148975).

690065 is a wasteful number, since it uses less digits than its factorization.

690065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 690065 is about 830.7015107727. The cubic root of 690065 is about 88.3683339008.

The spelling of 690065 in words is "six hundred ninety thousand, sixty-five".