3935664646 has 16 divisors (see below), whose sum is σ = 6112576800. Its totient is φ = 1898261568.

The previous prime is 3935664589. The next prime is 3935664647. The reversal of 3935664646 is 6464665393.

3935664646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3935664593 and 3935664602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3935664647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35431 + ... + 95533.

It is an arithmetic number, because the mean of its divisors is an integer number (382036050).

Almost surely, 2^3935664646 is an apocalyptic number.

3935664646 is a deficient number, since it is larger than the sum of its proper divisors (2176912154).

3935664646 is a wasteful number, since it uses less digits than its factorization.

3935664646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61263.

The product of its digits is 8398080, while the sum is 52.

The square root of 3935664646 is about 62734.8758347380. The cubic root of 3935664646 is about 1578.8445119531.

The spelling of 3935664646 in words is "three billion, nine hundred thirty-five million, six hundred sixty-four thousand, six hundred forty-six".