4666444640 has 96 divisors (see below), whose sum is σ = 12951894816. Its totient is φ = 1566351360.

The previous prime is 4666444639. The next prime is 4666444649. The reversal of 4666444640 is 464446664.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4666444591 and 4666444600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4666444649) 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, 79097 + ... + 124856.

It is an arithmetic number, because the mean of its divisors is an integer number (134915571).

Almost surely, 2^4666444640 is an apocalyptic number.

4666444640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4666444640 is an abundant number, since it is smaller than the sum of its proper divisors (8285450176).

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

4666444640 is a wasteful number, since it uses less digits than its factorization.

4666444640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203992 (or 203984 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The square root of 4666444640 is about 68311.3800182664. The cubic root of 4666444640 is about 1671.0728091910.

The spelling of 4666444640 in words is "four billion, six hundred sixty-six million, four hundred forty-four thousand, six hundred forty".