690049226 has 8 divisors (see below), whose sum is σ = 1041667140. Its totient is φ = 342826848.

The previous prime is 690049219. The next prime is 690049231. The reversal of 690049226 is 622940096.

It can be written as a sum of positive squares in 2 ways, for example, as 689325025 + 724201 = 26255^2 + 851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 690049226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098491 + ... + 1099118.

Almost surely, 2^690049226 is an apocalyptic number.

690049226 is a deficient number, since it is larger than the sum of its proper divisors (351617914).

690049226 is a wasteful number, since it uses less digits than its factorization.

690049226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197768.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 690049226 is about 26268.7880573124. The cubic root of 690049226 is about 883.6766056683.

The spelling of 690049226 in words is "six hundred ninety million, forty-nine thousand, two hundred twenty-six".