4621073664 has 72 divisors (see below), whose sum is σ = 12437167680. Its totient is φ = 1523027968.

The previous prime is 4621073659. The next prime is 4621073693. The reversal of 4621073664 is 4663701264.

It is a happy number.

It is a super-2 number, since 2×4621073664² = 42708643616228769792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34549 + ... + 102155.

It is an arithmetic number, because the mean of its divisors is an integer number (172738440).

Almost surely, 2^4621073664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4621073664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6218583840).

4621073664 is an abundant number, since it is smaller than the sum of its proper divisors (7816094016).

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

4621073664 is an equidigital number, since it uses as much as digits as its factorization.

4621073664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67715 (or 67701 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 4621073664 is about 67978.4794181217. The cubic root of 4621073664 is about 1665.6393176536.

The spelling of 4621073664 in words is "four billion, six hundred twenty-one million, seventy-three thousand, six hundred sixty-four".