3720067345 has 4 divisors (see below), whose sum is σ = 4464080820. Its totient is φ = 2976053872.

The previous prime is 3720067339. The next prime is 3720067411. The reversal of 3720067345 is 5437600273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5437600273 = 7 ⋅776800039.

It can be written as a sum of positive squares in 2 ways, for example, as 2255015169 + 1465052176 = 47487^2 + 38276^2 .

It is a cyclic number.

It is not a de Polignac number, because 3720067345 - 2¹⁹ = 3719543057 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372006730 + ... + 372006739.

It is an arithmetic number, because the mean of its divisors is an integer number (1116020205).

Almost surely, 2^3720067345 is an apocalyptic number.

It is an amenable number.

3720067345 is a deficient number, since it is larger than the sum of its proper divisors (744013475).

3720067345 is an equidigital number, since it uses as much as digits as its factorization.

3720067345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744013474.

The product of its (nonzero) digits is 105840, while the sum is 37.

The square root of 3720067345 is about 60992.3548077954. The cubic root of 3720067345 is about 1549.4715291695.

The spelling of 3720067345 in words is "three billion, seven hundred twenty million, sixty-seven thousand, three hundred forty-five".