604815649 has 3 divisors (see below), whose sum is σ = 604840243. Its totient is φ = 604791056.

The previous prime is 604815643. The next prime is 604815707. The reversal of 604815649 is 946518406.

The square root of 604815649 is 24593.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 58752225 + 546063424 = 7665^2 + 23368^2 .

It is not a de Polignac number, because 604815649 - 2¹³ = 604807457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (604815643) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12297 + ... + 36889.

Almost surely, 2^604815649 is an apocalyptic number.

604815649 is the 24593-rd square number.

604815649 is the 12297-th centered octagonal number.

It is an amenable number.

604815649 is a deficient number, since it is larger than the sum of its proper divisors (24594).

604815649 is an frugal number, since it uses more digits than its factorization.

604815649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49186 (or 24593 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The cubic root of 604815649 is about 845.6831416458.

The spelling of 604815649 in words is "six hundred four million, eight hundred fifteen thousand, six hundred forty-nine".