1285604 has 12 divisors (see below), whose sum is σ = 2258928. Its totient is φ = 640200.

The previous prime is 1285553. The next prime is 1285607. The reversal of 1285604 is 4065821.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1285607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 1809.

It is an arithmetic number, because the mean of its divisors is an integer number (188244).

2^1285604 is an apocalyptic number.

It is an amenable number.

1285604 is a deficient number, since it is larger than the sum of its proper divisors (973324).

1285604 is a wasteful number, since it uses less digits than its factorization.

1285604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1285604 is about 1133.8447865559. The cubic root of 1285604 is about 108.7349281090.

The spelling of 1285604 in words is "one million, two hundred eighty-five thousand, six hundred four".