4644632646 has 24 divisors (see below), whose sum is σ = 10095128784. Its totient is φ = 1543325040.

The previous prime is 4644632639. The next prime is 4644632651. The reversal of 4644632646 is 6462364464.

4644632646 is a `hidden beast` number, since 4 + 6 + 4 + 4 + 632 + 6 + 4 + 6 = 666.

It is a super-2 number, since 2×4644632646² = 43145224832577922632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401290 + ... + 412701.

It is an arithmetic number, because the mean of its divisors is an integer number (420630366).

Almost surely, 2^4644632646 is an apocalyptic number.

4644632646 is an abundant number, since it is smaller than the sum of its proper divisors (5450496138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4644632646 is a wasteful number, since it uses less digits than its factorization.

4644632646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814316 (or 814313 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 45.

The square root of 4644632646 is about 68151.5417727288. The cubic root of 4644632646 is about 1668.4650873430.

The spelling of 4644632646 in words is "four billion, six hundred forty-four million, six hundred thirty-two thousand, six hundred forty-six".