3740700721 has 2 divisors, whose sum is σ = 3740700722. Its totient is φ = 3740700720.

The previous prime is 3740700707. The next prime is 3740700731. The reversal of 3740700721 is 1270070473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2121523600 + 1619177121 = 46060^2 + 40239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3740700721 is a prime.

It is not a weakly prime, because it can be changed into another prime (3740700701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1870350360 + 1870350361.

It is an arithmetic number, because the mean of its divisors is an integer number (1870350361).

Almost surely, 2^3740700721 is an apocalyptic number.

It is an amenable number.

3740700721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3740700721 is an equidigital number, since it uses as much as digits as its factorization.

3740700721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 3740700721 is about 61161.2681441450. The cubic root of 3740700721 is about 1552.3309667703.

The spelling of 3740700721 in words is "three billion, seven hundred forty million, seven hundred thousand, seven hundred twenty-one".