3720169 has 2 divisors, whose sum is σ = 3720170. Its totient is φ = 3720168.

The previous prime is 3720163. The next prime is 3720179. The reversal of 3720169 is 9610273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2679769 + 1040400 = 1637^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720169 - 2⁵ = 3720137 is a prime.

It is a super-2 number, since 2×3720169² = 27679314777122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3720163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860084 + 1860085.

It is an arithmetic number, because the mean of its divisors is an integer number (1860085).

Almost surely, 2^3720169 is an apocalyptic number.

It is an amenable number.

3720169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720169 is an equidigital number, since it uses as much as digits as its factorization.

3720169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 3720169 is about 1928.7739629101. The cubic root of 3720169 is about 154.9485642722.

The spelling of 3720169 in words is "three million, seven hundred twenty thousand, one hundred sixty-nine".