4756642221 has 8 divisors (see below), whose sum is σ = 6342514560. Its totient is φ = 3170932352.

The previous prime is 4756642193. The next prime is 4756642223. The reversal of 4756642221 is 1222466574.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4756642221 - 2¹⁵ = 4756609453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4756642221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4756642223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73516 + ... + 122138.

It is an arithmetic number, because the mean of its divisors is an integer number (792814320).

Almost surely, 2^4756642221 is an apocalyptic number.

It is an amenable number.

4756642221 is a deficient number, since it is larger than the sum of its proper divisors (1585872339).

4756642221 is a wasteful number, since it uses less digits than its factorization.

4756642221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81235.

The product of its digits is 161280, while the sum is 39.

The square root of 4756642221 is about 68968.4146620756. The cubic root of 4756642221 is about 1681.7708817431.

The spelling of 4756642221 in words is "four billion, seven hundred fifty-six million, six hundred forty-two thousand, two hundred twenty-one".