7964306643 has 16 divisors (see below), whose sum is σ = 10916176896. Its totient is φ = 5163036480.

The previous prime is 7964306641. The next prime is 7964306677. The reversal of 7964306643 is 3466034697.

It is not a de Polignac number, because 7964306643 - 2¹ = 7964306641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7964306592 and 7964306601.

It is not an unprimeable number, because it can be changed into a prime (7964306641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240555 + ... + 271652.

It is an arithmetic number, because the mean of its divisors is an integer number (682261056).

Almost surely, 2^7964306643 is an apocalyptic number.

7964306643 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7964306643 is a deficient number, since it is larger than the sum of its proper divisors (2951870253).

7964306643 is a wasteful number, since it uses less digits than its factorization.

7964306643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512354.

The product of its (nonzero) digits is 1959552, while the sum is 48.

The square root of 7964306643 is about 89242.9641092226. The cubic root of 7964306643 is about 1997.0211189199.

The spelling of 7964306643 in words is "seven billion, nine hundred sixty-four million, three hundred six thousand, six hundred forty-three".