206243653 has 24 divisors (see below), whose sum is σ = 265446720. Its totient is φ = 156763200.

The previous prime is 206243647. The next prime is 206243657. The reversal of 206243653 is 356342602.

It is a happy number.

It is not a de Polignac number, because 206243653 - 2¹³ = 206235461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206243657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31758 + ... + 37696.

It is an arithmetic number, because the mean of its divisors is an integer number (11060280).

Almost surely, 2^206243653 is an apocalyptic number.

It is an amenable number.

206243653 is a deficient number, since it is larger than the sum of its proper divisors (59203067).

206243653 is a wasteful number, since it uses less digits than its factorization.

206243653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6009 (or 5998 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 206243653 is about 14361.1856404685. The cubic root of 206243653 is about 590.8268145392.

The spelling of 206243653 in words is "two hundred six million, two hundred forty-three thousand, six hundred fifty-three".