206403604 has 12 divisors (see below), whose sum is σ = 394043328. Its totient is φ = 93819800.

The previous prime is 206403583. The next prime is 206403607. The reversal of 206403604 is 406304602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206403607) 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, 2345452 + ... + 2345539.

It is an arithmetic number, because the mean of its divisors is an integer number (32836944).

Almost surely, 2^206403604 is an apocalyptic number.

It is an amenable number.

206403604 is a deficient number, since it is larger than the sum of its proper divisors (187639724).

206403604 is a wasteful number, since it uses less digits than its factorization.

206403604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691006 (or 4691004 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 206403604 is about 14366.7534258788. The cubic root of 206403604 is about 590.9795124420.

The spelling of 206403604 in words is "two hundred six million, four hundred three thousand, six hundred four".