3640506307 has 4 divisors (see below), whose sum is σ = 3717963936. Its totient is φ = 3563048680.

The previous prime is 3640506283. The next prime is 3640506319. The reversal of 3640506307 is 7036050463.

3640506307 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7036050463 = 13 ⋅541234651.

It is a cyclic number.

It is not a de Polignac number, because 3640506307 - 2²⁷ = 3506288579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640501307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38728744 + ... + 38728837.

It is an arithmetic number, because the mean of its divisors is an integer number (929490984).

Almost surely, 2^3640506307 is an apocalyptic number.

3640506307 is a deficient number, since it is larger than the sum of its proper divisors (77457629).

3640506307 is an equidigital number, since it uses as much as digits as its factorization.

3640506307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77457628.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 3640506307 is about 60336.6083484977. The cubic root of 3640506307 is about 1538.3456551483.

The spelling of 3640506307 in words is "three billion, six hundred forty million, five hundred six thousand, three hundred seven".