4621601664 has 64 divisors (see below), whose sum is σ = 13640154000. Its totient is φ = 1540532736.

The previous prime is 4621601659. The next prime is 4621601681. The reversal of 4621601664 is 4661061264.

4621601664 is a `hidden beast` number, since 46 + 2 + 1 + 601 + 6 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665179 + ... + 672090.

Almost surely, 2^4621601664 is an apocalyptic number.

It is an amenable number.

4621601664 is an abundant number, since it is smaller than the sum of its proper divisors (9018552336).

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

4621601664 is a wasteful number, since it uses less digits than its factorization.

4621601664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337292 (or 1337274 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 4621601664 is about 67982.3628892083. The cubic root of 4621601664 is about 1665.7027534213.

The spelling of 4621601664 in words is "four billion, six hundred twenty-one million, six hundred one thousand, six hundred sixty-four".