1604475 has 24 divisors (see below), whose sum is σ = 2948720. Its totient is φ = 855360.

The previous prime is 1604461. The next prime is 1604479. The reversal of 1604475 is 5744061.

It is not a de Polignac number, because 1604475 - 2⁷ = 1604347 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1604479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514 + ... + 1863.

2^1604475 is an apocalyptic number.

1604475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1604475 is a deficient number, since it is larger than the sum of its proper divisors (1344245).

1604475 is a wasteful number, since it uses less digits than its factorization.

1604475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1604475 is about 1266.6787280128. The cubic root of 1604475 is about 117.0696495225.

The spelling of 1604475 in words is "one million, six hundred four thousand, four hundred seventy-five".