4722782621 has 4 divisors (see below), whose sum is σ = 4723087644. Its totient is φ = 4722477600.

The previous prime is 4722782609. The next prime is 4722782641. The reversal of 4722782621 is 1262872274.

4722782621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1262872274 = 2 ⋅631436137.

It can be written as a sum of positive squares in 2 ways, for example, as 2419262596 + 2303520025 = 49186^2 + 47995^2 .

It is a cyclic number.

It is not a de Polignac number, because 4722782621 - 2¹⁰ = 4722781597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4722782641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127970 + ... + 160691.

It is an arithmetic number, because the mean of its divisors is an integer number (1180771911).

Almost surely, 2^4722782621 is an apocalyptic number.

It is an amenable number.

4722782621 is a deficient number, since it is larger than the sum of its proper divisors (305023).

4722782621 is a wasteful number, since it uses less digits than its factorization.

4722782621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305022.

The product of its digits is 150528, while the sum is 41.

The square root of 4722782621 is about 68722.5044726980. The cubic root of 4722782621 is about 1677.7708792068.

The spelling of 4722782621 in words is "four billion, seven hundred twenty-two million, seven hundred eighty-two thousand, six hundred twenty-one".