1604697 has 8 divisors (see below), whose sum is σ = 2153856. Its totient is φ = 1062672.

The previous prime is 1604651. The next prime is 1604711. The reversal of 1604697 is 7964061.

It is a happy number.

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

It is not a de Polignac number, because 1604697 - 2⁸ = 1604441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1604297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (269232).

2^1604697 is an apocalyptic number.

It is an amenable number.

1604697 is a deficient number, since it is larger than the sum of its proper divisors (549159).

1604697 is a wasteful number, since it uses less digits than its factorization.

1604697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1604697 is about 1266.7663557263. The cubic root of 1604697 is about 117.0750486434.

The spelling of 1604697 in words is "one million, six hundred four thousand, six hundred ninety-seven".