206220424657 has 8 divisors (see below), whose sum is σ = 222096934080. Its totient is φ = 190345829520.

The previous prime is 206220424601. The next prime is 206220424673. The reversal of 206220424657 is 756424022602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206220424657 - 2³⁵ = 171860686289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206220424057) 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, 250807 + ... + 689452.

It is an arithmetic number, because the mean of its divisors is an integer number (27762116760).

Almost surely, 2^206220424657 is an apocalyptic number.

It is an amenable number.

206220424657 is a deficient number, since it is larger than the sum of its proper divisors (15876509423).

206220424657 is a wasteful number, since it uses less digits than its factorization.

206220424657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957143.

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 206220424657 in words is "two hundred six billion, two hundred twenty million, four hundred twenty-four thousand, six hundred fifty-seven".