603964321 has 8 divisors (see below), whose sum is σ = 645152904. Its totient is φ = 563404800.

The previous prime is 603964301. The next prime is 603964327. The reversal of 603964321 is 123469306.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 65028096 + 538936225 = 8064^2 + 23215^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 603964321 - 2¹⁷ = 603833249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (603964327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155280 + ... + 159121.

It is an arithmetic number, because the mean of its divisors is an integer number (80644113).

Almost surely, 2^603964321 is an apocalyptic number.

It is an amenable number.

603964321 is a deficient number, since it is larger than the sum of its proper divisors (41188583).

603964321 is a wasteful number, since it uses less digits than its factorization.

603964321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314531.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 603964321 is about 24575.6855652086. The cubic root of 603964321 is about 845.2861656961.

The spelling of 603964321 in words is "six hundred three million, nine hundred sixty-four thousand, three hundred twenty-one".