3720635 has 4 divisors (see below), whose sum is σ = 4464768. Its totient is φ = 2976504.

The previous prime is 3720623. The next prime is 3720649. The reversal of 3720635 is 5360273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5360273 = 29 ⋅184837.

It is a cyclic number.

It is not a de Polignac number, because 3720635 - 2⁶ = 3720571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372059 + ... + 372068.

It is an arithmetic number, because the mean of its divisors is an integer number (1116192).

Almost surely, 2^3720635 is an apocalyptic number.

3720635 is a deficient number, since it is larger than the sum of its proper divisors (744133).

3720635 is an equidigital number, since it uses as much as digits as its factorization.

3720635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744132.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 3720635 is about 1928.8947612558. The cubic root of 3720635 is about 154.9550337826.

The spelling of 3720635 in words is "three million, seven hundred twenty thousand, six hundred thirty-five".