603420665 has 4 divisors (see below), whose sum is σ = 724104804. Its totient is φ = 482736528.

The previous prime is 603420641. The next prime is 603420667. The reversal of 603420665 is 566024306.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64577296 + 538843369 = 8036^2 + 23213^2 .

It is a cyclic number.

It is not a de Polignac number, because 603420665 - 2¹⁴ = 603404281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (603420667) 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, 60342062 + ... + 60342071.

It is an arithmetic number, because the mean of its divisors is an integer number (181026201).

Almost surely, 2^603420665 is an apocalyptic number.

It is an amenable number.

603420665 is a deficient number, since it is larger than the sum of its proper divisors (120684139).

603420665 is a wasteful number, since it uses less digits than its factorization.

603420665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120684138.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 603420665 is about 24564.6222238405. The cubic root of 603420665 is about 845.0324626022.

The spelling of 603420665 in words is "six hundred three million, four hundred twenty thousand, six hundred sixty-five".