603661222 has 4 divisors (see below), whose sum is σ = 905491836. Its totient is φ = 301830610.

The previous prime is 603661213. The next prime is 603661229. The reversal of 603661222 is 222166306.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (603661229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150915304 + ... + 150915307.

It is an arithmetic number, because the mean of its divisors is an integer number (226372959).

Almost surely, 2^603661222 is an apocalyptic number.

603661222 is a deficient number, since it is larger than the sum of its proper divisors (301830614).

603661222 is a wasteful number, since it uses less digits than its factorization.

603661222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301830613.

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

The square root of 603661222 is about 24569.5181474932. The cubic root of 603661222 is about 845.1447399786.

It can be divided in two parts, 603 and 661222, that added together give a triangular number (661825 = T₁₁₅₀).

The spelling of 603661222 in words is "six hundred three million, six hundred sixty-one thousand, two hundred twenty-two".