690326 has 16 divisors (see below), whose sum is σ = 1274784. Its totient is φ = 273024.

The previous prime is 690323. The next prime is 690341. The reversal of 690326 is 623096.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 690295 and 690304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690323) 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, 1715 + ... + 2078.

It is an arithmetic number, because the mean of its divisors is an integer number (79674).

2⁶⁹⁰³²⁶ is an apocalyptic number.

690326 is a deficient number, since it is larger than the sum of its proper divisors (584458).

690326 is a wasteful number, since it uses less digits than its factorization.

690326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 690326 is about 830.8585920600. The cubic root of 690326 is about 88.3794735413.

The spelling of 690326 in words is "six hundred ninety thousand, three hundred twenty-six".