206722893 has 8 divisors (see below), whose sum is σ = 296832928. Its totient is φ = 127214064.

The previous prime is 206722889. The next prime is 206722909. The reversal of 206722893 is 398227602.

206722893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 206722893 - 2² = 206722889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 5300587 = 206722893 / (2 + 0 + 6 + 7 + 2 + 2 + 8 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206722883) 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, 2650255 + ... + 2650332.

It is an arithmetic number, because the mean of its divisors is an integer number (37104116).

Almost surely, 2^206722893 is an apocalyptic number.

It is an amenable number.

206722893 is a deficient number, since it is larger than the sum of its proper divisors (90110035).

206722893 is a wasteful number, since it uses less digits than its factorization.

206722893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300603.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 206722893 is about 14377.8612109034. The cubic root of 206722893 is about 591.2840872975.

The spelling of 206722893 in words is "two hundred six million, seven hundred twenty-two thousand, eight hundred ninety-three".