1604466 has 12 divisors (see below), whose sum is σ = 3476382. Its totient is φ = 534816.

The previous prime is 1604461. The next prime is 1604479. The reversal of 1604466 is 6644061.

It can be written as a sum of positive squares in only one way, i.e., 1010025 + 594441 = 1005^2 + 771^2 .

It is a super-2 number, since 2×1604466² = 5148622290312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604461) 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, 44551 + ... + 44586.

2^1604466 is an apocalyptic number.

1604466 is an abundant number, since it is smaller than the sum of its proper divisors (1871916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604466 is a wasteful number, since it uses less digits than its factorization.

1604466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89145 (or 89142 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1604466 is about 1266.6751754100. The cubic root of 1604466 is about 117.0694306287.

It can be divided in two parts, 16044 and 66, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 1604466 in words is "one million, six hundred four thousand, four hundred sixty-six".