3620161 has 2 divisors, whose sum is σ = 3620162. Its totient is φ = 3620160.

The previous prime is 3620159. The next prime is 3620207. The reversal of 3620161 is 1610263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2421136 + 1199025 = 1556^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 3620161 - 2¹ = 3620159 is a prime.

Together with 3620159, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3624161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1810080 + 1810081.

It is an arithmetic number, because the mean of its divisors is an integer number (1810081).

Almost surely, 2^3620161 is an apocalyptic number.

It is an amenable number.

3620161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3620161 is an equidigital number, since it uses as much as digits as its factorization.

3620161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3620161 is about 1902.6720684343. The cubic root of 3620161 is about 153.5474570944.

The spelling of 3620161 in words is "three million, six hundred twenty thousand, one hundred sixty-one".