3720667 has 2 divisors, whose sum is σ = 3720668. Its totient is φ = 3720666.

The previous prime is 3720649. The next prime is 3720677. The reversal of 3720667 is 7660273.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3720667 - 2¹¹ = 3718619 is a prime.

It is not a weakly prime, because it can be changed into another prime (3720617) by changing a digit.

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 as a sum of consecutive naturals, namely, 1860333 + 1860334.

It is an arithmetic number, because the mean of its divisors is an integer number (1860334).

Almost surely, 2^3720667 is an apocalyptic number.

3720667 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720667 is an equidigital number, since it uses as much as digits as its factorization.

3720667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 3720667 is about 1928.9030561436. The cubic root of 3720667 is about 154.9554780210.

It can be divided in two parts, 37206 and 67, that added together give a palindrome (37273).

The spelling of 3720667 in words is "three million, seven hundred twenty thousand, six hundred sixty-seven".