4464622640 has 20 divisors (see below), whose sum is σ = 10380247824. Its totient is φ = 1785849024.

The previous prime is 4464622627. The next prime is 4464622681. The reversal of 4464622640 is 462264644.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 4464622594 and 4464622603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27903812 + ... + 27903971.

Almost surely, 2^4464622640 is an apocalyptic number.

4464622640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4464622640 is an abundant number, since it is smaller than the sum of its proper divisors (5915625184).

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

4464622640 is a wasteful number, since it uses less digits than its factorization.

4464622640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55807796 (or 55807790 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The square root of 4464622640 is about 66817.8317517113. The cubic root of 4464622640 is about 1646.6258122999.

The spelling of 4464622640 in words is "four billion, four hundred sixty-four million, six hundred twenty-two thousand, six hundred forty".