3720697 has 2 divisors, whose sum is σ = 3720698. Its totient is φ = 3720696.

The previous prime is 3720677. The next prime is 3720701. The reversal of 3720697 is 7960273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3625216 + 95481 = 1904^2 + 309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3720697 is a prime.

3720697 is a lucky number.

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, 1860348 + 1860349.

It is an arithmetic number, because the mean of its divisors is an integer number (1860349).

Almost surely, 2^3720697 is an apocalyptic number.

It is an amenable number.

3720697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720697 is an equidigital number, since it uses as much as digits as its factorization.

3720697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 3720697 is about 1928.9108325685. The cubic root of 3720697 is about 154.9558944922.

The spelling of 3720697 in words is "three million, seven hundred twenty thousand, six hundred ninety-seven".