1604601 has 6 divisors (see below), whose sum is σ = 2317770. Its totient is φ = 1069728.

The previous prime is 1604597. The next prime is 1604609. The reversal of 1604601 is 1064061.

1604601 is a `hidden beast` number, since 1 + 60 + 4 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 837225 + 767376 = 915^2 + 876^2 .

It is not a de Polignac number, because 1604601 - 2² = 1604597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89136 + ... + 89153.

It is an arithmetic number, because the mean of its divisors is an integer number (386295).

2^1604601 is an apocalyptic number.

It is an amenable number.

1604601 is a deficient number, since it is larger than the sum of its proper divisors (713169).

1604601 is a wasteful number, since it uses less digits than its factorization.

1604601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178295 (or 178292 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1604601 is about 1266.7284634048. The cubic root of 1604601 is about 117.0727139496.

Adding to 1604601 its reverse (1064061), we get a palindrome (2668662).

It can be divided in two parts, 160460 and 1, that added together give a triangular number (160461 = T₅₆₆).

The spelling of 1604601 in words is "one million, six hundred four thousand, six hundred one".