206604157 has 4 divisors (see below), whose sum is σ = 217478080. Its totient is φ = 195730236.

The previous prime is 206604131. The next prime is 206604169. The reversal of 206604157 is 751406602.

It is a happy number.

206604157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206604157 - 2²⁷ = 72386429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206604187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5436933 + ... + 5436970.

It is an arithmetic number, because the mean of its divisors is an integer number (54369520).

Almost surely, 2^206604157 is an apocalyptic number.

It is an amenable number.

206604157 is a deficient number, since it is larger than the sum of its proper divisors (10873923).

206604157 is a wasteful number, since it uses less digits than its factorization.

206604157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10873922.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 206604157 is about 14373.7314918569. The cubic root of 206604157 is about 591.1708597907.

The spelling of 206604157 in words is "two hundred six million, six hundred four thousand, one hundred fifty-seven".