690241 has 4 divisors (see below), whose sum is σ = 702000. Its totient is φ = 678484.

The previous prime is 690233. The next prime is 690259. The reversal of 690241 is 142096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690241 - 2³ = 690233 is a prime.

It is a Duffinian number.

690241 is a lucky number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690241.

It is not an unprimeable number, because it can be changed into a prime (690271) 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, 5791 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (175500).

2⁶⁹⁰²⁴¹ is an apocalyptic number.

It is an amenable number.

690241 is a deficient number, since it is larger than the sum of its proper divisors (11759).

690241 is a wasteful number, since it uses less digits than its factorization.

690241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11758.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 690241 is about 830.8074385801. The cubic root of 690241 is about 88.3758459974.

The spelling of 690241 in words is "six hundred ninety thousand, two hundred forty-one".