3720345 has 16 divisors (see below), whose sum is σ = 5987520. Its totient is φ = 1972544.

The previous prime is 3720337. The next prime is 3720349. The reversal of 3720345 is 5430273.

It is a cyclic number.

It is not a de Polignac number, because 3720345 - 2³ = 3720337 is a prime.

It is a Curzon number.

3720345 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3720349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2326 + ... + 3584.

It is an arithmetic number, because the mean of its divisors is an integer number (374220).

Almost surely, 2^3720345 is an apocalyptic number.

It is an amenable number.

3720345 is a deficient number, since it is larger than the sum of its proper divisors (2267175).

3720345 is a wasteful number, since it uses less digits than its factorization.

3720345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 3720345 is about 1928.8195872087. The cubic root of 3720345 is about 154.9510077559.

The spelling of 3720345 in words is "three million, seven hundred twenty thousand, three hundred forty-five".