4640664626 has 36 divisors (see below), whose sum is σ = 7633384938. Its totient is φ = 2114978112.

The previous prime is 4640664601. The next prime is 4640664631. The reversal of 4640664626 is 6264660464.

It can be written as a sum of positive squares in 3 ways, for example, as 2883797401 + 1756867225 = 53701^2 + 41915^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2327486 + ... + 2329478.

Almost surely, 2^4640664626 is an apocalyptic number.

4640664626 is a deficient number, since it is larger than the sum of its proper divisors (2992720312).

4640664626 is a wasteful number, since it uses less digits than its factorization.

4640664626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The square root of 4640664626 is about 68122.4238118404. The cubic root of 4640664626 is about 1667.9898155194.

The spelling of 4640664626 in words is "four billion, six hundred forty million, six hundred sixty-four thousand, six hundred twenty-six".