7730220601 has 4 divisors (see below), whose sum is σ = 7730597412. Its totient is φ = 7729843792.

The previous prime is 7730220593. The next prime is 7730220629. The reversal of 7730220601 is 1060220377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1995944976 + 5734275625 = 44676^2 + 75725^2 .

It is a cyclic number.

It is not a de Polignac number, because 7730220601 - 2³ = 7730220593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7730220601.

It is not an unprimeable number, because it can be changed into a prime (7730220691) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 155746 + ... + 199291.

It is an arithmetic number, because the mean of its divisors is an integer number (1932649353).

Almost surely, 2^7730220601 is an apocalyptic number.

It is an amenable number.

7730220601 is a deficient number, since it is larger than the sum of its proper divisors (376811).

7730220601 is a wasteful number, since it uses less digits than its factorization.

7730220601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376810.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 7730220601 is about 87921.6731016875. The cubic root of 7730220601 is about 1977.2608282629.

Adding to 7730220601 its reverse (1060220377), we get a palindrome (8790440978).

It can be divided in two parts, 77302 and 20601, that added together give a triangular number (97903 = T₄₄₂).

The spelling of 7730220601 in words is "seven billion, seven hundred thirty million, two hundred twenty thousand, six hundred one".