690422 has 8 divisors (see below), whose sum is σ = 1090200. Its totient is φ = 327024.

The previous prime is 690419. The next prime is 690427. The reversal of 690422 is 224096.

690422 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 a super-3 number, since 3×690422³ = 987336333927094344, which contains 333 as substring.

It is a nialpdrome in base 15.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690427) 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, 9047 + ... + 9122.

It is an arithmetic number, because the mean of its divisors is an integer number (136275).

2⁶⁹⁰⁴²² is an apocalyptic number.

690422 is a deficient number, since it is larger than the sum of its proper divisors (399778).

690422 is a wasteful number, since it uses less digits than its factorization.

690422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18190.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 690422 is about 830.9163616153. The cubic root of 690422 is about 88.3835701740.

The spelling of 690422 in words is "six hundred ninety thousand, four hundred twenty-two".