3640755697 has 2 divisors, whose sum is σ = 3640755698. Its totient is φ = 3640755696.

The previous prime is 3640755619. The next prime is 3640755709. The reversal of 3640755697 is 7965570463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3631749696 + 9006001 = 60264^2 + 3001^2 .

It is an emirp because it is prime and its reverse (7965570463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3640755697 - 2³¹ = 1493272049 is a prime.

It is not a weakly prime, because it can be changed into another prime (3640755607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820377848 + 1820377849.

It is an arithmetic number, because the mean of its divisors is an integer number (1820377849).

Almost surely, 2^3640755697 is an apocalyptic number.

It is an amenable number.

3640755697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640755697 is an equidigital number, since it uses as much as digits as its factorization.

3640755697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The square root of 3640755697 is about 60338.6749688788. The cubic root of 3640755697 is about 1538.3807820629.

The spelling of 3640755697 in words is "three billion, six hundred forty million, seven hundred fifty-five thousand, six hundred ninety-seven".