207608161 has 2 divisors, whose sum is σ = 207608162. Its totient is φ = 207608160.

The previous prime is 207608153. The next prime is 207608173. The reversal of 207608161 is 161806702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170459136 + 37149025 = 13056^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 207608161 - 2³ = 207608153 is a prime.

It is a super-2 number, since 2×207608161² = 86202297027603842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (207608111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103804080 + 103804081.

It is an arithmetic number, because the mean of its divisors is an integer number (103804081).

Almost surely, 2^207608161 is an apocalyptic number.

It is an amenable number.

207608161 is a deficient number, since it is larger than the sum of its proper divisors (1).

207608161 is an equidigital number, since it uses as much as digits as its factorization.

207608161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 207608161 is about 14408.6141248907. The cubic root of 207608161 is about 592.1269216317.

The spelling of 207608161 in words is "two hundred seven million, six hundred eight thousand, one hundred sixty-one".