690225232 has 20 divisors (see below), whose sum is σ = 1373456116. Its totient is φ = 335784960.

The previous prime is 690225227. The next prime is 690225241. The reversal of 690225232 is 232522096.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 464143936 + 226081296 = 21544^2 + 15036^2 .

It is a junction number, because it is equal to n+sod(n) for n = 690225194 and 690225203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582369 + ... + 583552.

Almost surely, 2^690225232 is an apocalyptic number.

It is an amenable number.

690225232 is a deficient number, since it is larger than the sum of its proper divisors (683230884).

690225232 is a wasteful number, since it uses less digits than its factorization.

690225232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165966 (or 1165960 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 690225232 is about 26272.1379411726. The cubic root of 690225232 is about 883.7517303392.

The spelling of 690225232 in words is "six hundred ninety million, two hundred twenty-five thousand, two hundred thirty-two".