206704072077 has 8 divisors (see below), whose sum is σ = 275612099616. Its totient is φ = 137799379632.

The previous prime is 206704072051. The next prime is 206704072103. The reversal of 206704072077 is 770270407602.

It is an interprime number because it is at equal distance from previous prime (206704072051) and next prime (206704072103).

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

It is not a de Polignac number, because 206704072077 - 2¹⁰ = 206704071053 is a prime.

It is a super-2 number, since 2×206704072077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206704072027) 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, 685383 + ... + 939764.

It is an arithmetic number, because the mean of its divisors is an integer number (34451512452).

Almost surely, 2^206704072077 is an apocalyptic number.

It is an amenable number.

206704072077 is a deficient number, since it is larger than the sum of its proper divisors (68908027539).

206704072077 is a wasteful number, since it uses less digits than its factorization.

206704072077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667547.

The product of its (nonzero) digits is 230496, while the sum is 42.

Adding to 206704072077 its reverse (770270407602), we get a palindrome (976974479679).

The spelling of 206704072077 in words is "two hundred six billion, seven hundred four million, seventy-two thousand, seventy-seven".