690222403 has 4 divisors (see below), whose sum is σ = 743316448. Its totient is φ = 637128360.

The previous prime is 690222371. The next prime is 690222427. The reversal of 690222403 is 304222096.

690222403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690222403 - 2⁵ = 690222371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690222493) 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, 26547003 + ... + 26547028.

It is an arithmetic number, because the mean of its divisors is an integer number (185829112).

Almost surely, 2^690222403 is an apocalyptic number.

690222403 is a deficient number, since it is larger than the sum of its proper divisors (53094045).

690222403 is a wasteful number, since it uses less digits than its factorization.

690222403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53094044.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 690222403 is about 26272.0841008094. The cubic root of 690222403 is about 883.7505229376.

Adding to 690222403 its reverse (304222096), we get a palindrome (994444499).

The spelling of 690222403 in words is "six hundred ninety million, two hundred twenty-two thousand, four hundred three".