206403662604 has 48 divisors (see below), whose sum is σ = 501800140800. Its totient is φ = 65950844736.

The previous prime is 206403662603. The next prime is 206403662639. The reversal of 206403662604 is 406266304602.

It is a happy number.

It is a super-3 number, since 3×206403662604³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (206403662603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2085132 + ... + 2181875.

It is an arithmetic number, because the mean of its divisors is an integer number (10454169600).

Almost surely, 2^206403662604 is an apocalyptic number.

It is an amenable number.

206403662604 is an abundant number, since it is smaller than the sum of its proper divisors (295396478196).

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

206403662604 is a wasteful number, since it uses less digits than its factorization.

206403662604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267182 (or 4267180 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

The spelling of 206403662604 in words is "two hundred six billion, four hundred three million, six hundred sixty-two thousand, six hundred four".