690433 has 2 divisors, whose sum is σ = 690434. Its totient is φ = 690432.

The previous prime is 690427. The next prime is 690439. The reversal of 690433 is 334096.

It is a balanced prime because it is at equal distance from previous prime (690427) and next prime (690439).

It can be written as a sum of positive squares in only one way, i.e., 552049 + 138384 = 743^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 690433 - 2⁹ = 689921 is a prime.

690433 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 690398 and 690407.

It is not a weakly prime, because it can be changed into another prime (690439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345216 + 345217.

It is an arithmetic number, because the mean of its divisors is an integer number (345217).

2⁶⁹⁰⁴³³ is an apocalyptic number.

It is an amenable number.

690433 is a deficient number, since it is larger than the sum of its proper divisors (1).

690433 is an equidigital number, since it uses as much as digits as its factorization.

690433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 690433 is about 830.9229807870. The cubic root of 690433 is about 88.3840395556.

The spelling of 690433 in words is "six hundred ninety thousand, four hundred thirty-three".