206607236421 has 8 divisors (see below), whose sum is σ = 275498894304. Its totient is φ = 137726868080.

The previous prime is 206607236417. The next prime is 206607236441. The reversal of 206607236421 is 124632706602.

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 206607236421 - 2² = 206607236417 is a prime.

It is a super-3 number, since 3×206607236421³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206607236421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206607236411) 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, 2779590 + ... + 2852951.

It is an arithmetic number, because the mean of its divisors is an integer number (34437361788).

Almost surely, 2^206607236421 is an apocalyptic number.

It is an amenable number.

206607236421 is a deficient number, since it is larger than the sum of its proper divisors (68891657883).

206607236421 is a wasteful number, since it uses less digits than its factorization.

206607236421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644771.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 206607236421 in words is "two hundred six billion, six hundred seven million, two hundred thirty-six thousand, four hundred twenty-one".