4643223640 has 64 divisors (see below), whose sum is σ = 11790036000. Its totient is φ = 1630218240.

The previous prime is 4643223631. The next prime is 4643223659. The reversal of 4643223640 is 463223464.

It is a junction number, because it is equal to n+sod(n) for n = 4643223596 and 4643223605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169185 + ... + 194704.

Almost surely, 2^4643223640 is an apocalyptic number.

4643223640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4643223640 is an abundant number, since it is smaller than the sum of its proper divisors (7146812360).

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

4643223640 is a wasteful number, since it uses less digits than its factorization.

4643223640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363940 (or 363936 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 4643223640 is about 68141.2036876367. The cubic root of 4643223640 is about 1668.2963538635.

The spelling of 4643223640 in words is "four billion, six hundred forty-three million, two hundred twenty-three thousand, six hundred forty".