206604020 has 24 divisors (see below), whose sum is σ = 495849984. Its totient is φ = 70835616.

The previous prime is 206604019. The next prime is 206604023. The reversal of 206604020 is 20406602.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 206603983 and 206604001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206604023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737732 + ... + 738011.

It is an arithmetic number, because the mean of its divisors is an integer number (20660416).

Almost surely, 2^206604020 is an apocalyptic number.

206604020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206604020 is an abundant number, since it is smaller than the sum of its proper divisors (289245964).

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

206604020 is a wasteful number, since it uses less digits than its factorization.

206604020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475759 (or 1475757 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 206604020 is about 14373.7267262182. The cubic root of 206604020 is about 591.1707291215.

The spelling of 206604020 in words is "two hundred six million, six hundred four thousand, twenty".