4640728761 has 16 divisors (see below), whose sum is σ = 6913569600. Its totient is φ = 3076532064.

The previous prime is 4640728747. The next prime is 4640728783. The reversal of 4640728761 is 1678270464.

It is not a de Polignac number, because 4640728761 - 2¹⁰ = 4640727737 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4640724761) 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, 475276 + ... + 484941.

It is an arithmetic number, because the mean of its divisors is an integer number (432098100).

Almost surely, 2^4640728761 is an apocalyptic number.

It is an amenable number.

4640728761 is a deficient number, since it is larger than the sum of its proper divisors (2272840839).

4640728761 is a wasteful number, since it uses less digits than its factorization.

4640728761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960405 (or 960399 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 4640728761 is about 68122.8945436114. The cubic root of 4640728761 is about 1667.9974994787.

The spelling of 4640728761 in words is "four billion, six hundred forty million, seven hundred twenty-eight thousand, seven hundred sixty-one".